tests/pkg/lvgl*: fix the main thread stack size for ESPs

[gschorcht]

Contribution description

ESPx SoC need more stack size for the main thread to avoid stack overflows.

Testing procedure

Use any ESP32 board or any ESP32-S2 board and flash tests/pkg/lvgl for the esp32-wrover-kit respective the esp32s2-lilygo-ttgo-t8, for example:

BOARD=esp32-wrover-kit make -j8 -C tests/pkg/lvgl flash

Without this PR the application crashes

main(): This is RIOT! (Version: 2023.10-devel-106-gd512f-tests/pkg/lvgl_fix_main_stack_size)
EXCEPTION!! exccause=29 (StoreProhibitedCause) @4008274a excvaddr=fefffffb
heap: 310368 (used 4176, free 306192) [bytes]

register set
pc      : 40082f74	ps      : 00050033	exccause: 0000001d	excvaddr: fefffffb
epc1    : 40082f74	
a0      : 4008274a	a1      : 3ffb1bd0	a2      : fefffff7	a3      : 00000000
a4      : 3ff000dc	a5      : 400826e0	a6      : 00000000	a7      : 3ffb1e08
a8      : 0000000b	a9      : 3ffb1df8	a10     : 3ffb1e7c	a11     : 00000001
a12     : 00000000	a13     : 00000000	a14     : 00000000	a15     : 000000a3

with this PR the application works as expected.

Issues/PRs references

[riot-ci]

Murdock results

✔️ PASSED

db71529 tests/pkg/lvgl_touch: increase main thread stack size for ESPs

Success	Failures	Total	Runtime
29	0	29	01m:24s

Artifacts

• Documentation preview

[benpicco]

bors merge

[bors]

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• Murdock
• static-tests
• tools-build-success