tests: coredump: Call k_panic() directly for mpfs_icicle board

mpfs_icicle timeouts on this test similarly to other boards
simulated in Renode. Null pointer dereference doesn't trigger
a CPU fault during simulation. Instead, call k_panic() directly.

Link: a28d5df

Signed-off-by: Marek Slowinski <[email protected]>

Author: mars-low

tests/subsys/debug/coredump/src/main.c

@@ -37,6 +37,7 @@ __no_optimization void func_3(uint32_t *addr)
 	defined(CONFIG_BOARD_HIFIVE1) || \
 	defined(CONFIG_BOARD_HIFIVE_UNLEASHED) || \
 	defined(CONFIG_BOARD_HIFIVE_UNMATCHED) || \
+	defined(CONFIG_BOARD_MPFS_ICICLE) || \
 	defined(CONFIG_BOARD_LONGAN_NANO) || \
 	defined(CONFIG_BOARD_QEMU_XTENSA) || \
 	defined(CONFIG_BOARD_RISCV32_VIRTUAL) || \