dma tests fail with stm32wb55 and stm32l476 nucleo boards

[FRASTM]

Describe the bug
running tests/drivers/dma/chan_blen_transfer and tests/drivers/dma/loop_transfer fail
on nucleo_wb55rg when boards/nucleo_wb55rg.conf and boards/nucleo_wb55rg.overlay are added

running tests/drivers/dma/chan_blen_transfer fails
on nucleo_l476rg

(maybe others)

To Reproduce
Steps to reproduce the behavior:
.$ west build -p auto -b nucleo_wb55rg tests/drivers/dma/chan_blen_transfer/
See error

Running test suite dma_m2m_test
===================================================================
START - test_dma_m2m_chan0_burst8
Cannot get dma controller

    Assertion failed at WEST_TOPDIR/zephyr/tests/drivers/dma/chan_blen_transfere

 FAIL - test_dma_m2m_chan0_burst8
===================================================================
START - test_dma_m2m_chan1_burst8
Cannot get dma controller

    Assertion failed at WEST_TOPDIR/zephyr/tests/drivers/dma/chan_blen_transfere
                                                                                
 FAIL - test_dma_m2m_chan1_burst8                                               
===================================================================             
START - test_dma_m2m_chan0_burst16                                              
Cannot get dma controller                                                       
                                                                                
    Assertion failed at WEST_TOPDIR/zephyr/tests/drivers/dma/chan_blen_transfere
                                                                                
 FAIL - test_dma_m2m_chan0_burst16                                              
===================================================================             
START - test_dma_m2m_chan1_burst16                                              
Cannot get dma controller                                                       
                                                                                
    Assertion failed at WEST_TOPDIR/zephyr/tests/drivers/dma/chan_blen_transfere
                                                                                
 FAIL - test_dma_m2m_chan1_burst16                                              
===================================================================             
Test suite dma_m2m_test failed.                                                 
===================================================================             
PROJECT EXECUTION FAILED     

.$ west build -p auto -b nucleo_wb55rg tests/drivers/dma/loop_transfer/
See error

DMA memory to memory transfer started on DMAMUX_1                               
Preparing DMA Controller                                                        
Starting the transfer and waiting for 1 second                                  
TX data: The quick brown fox jumps over the lazy dog ....                       
block_size 48                                                                   
E: cannot configure the dma stream -1.                                          
ERROR: unfinished transfer                                                      
Each RX buffer should contain the full TX buffer string.                        
TX data: The quick brown fox jumps over the lazy dog ....                       
RX data Loop 0: The quick brown fox jumps over the lazy dog ....                
RX data Loop 1: The quick brown fox jumps over the lazy dog ....                
RX data Loop 2:                                                                 
RX data Loop 3:                                                                 
RX data Loop 4:                                                                 
Finished: DMA       

Expected behavior
tests PASSED

Additional context
master branch : a7aef46

[FRASTM]

tests/drivers/dma/loop_transfer/nucleo_wb55rg.conf :

CONFIG_DMA_LOOP_TRANSFER_DRV_NAME="DMAMUX_1"
CONFIG_DMA_LOOP_TRANSFER_CHANNEL_NR=1

tests/drivers/dma/loop_transfer/nucleo_wb55rg.overlay :

&dma1 {
	status = "okay";
};

&dma2 {
	status = "okay";
};

&dmamux1 {
	status = "okay";
};