tests: ztest: fix error_hook test case fail in some board

Enlarge the test thread stack size, to fix test case fail
in some board which need more stack size for testing, when
CONFIG_EXCEPTION_DEBUG is enabled.

Signed-off-by: Enjia Mai <enjiax.mai@intel.com>
diff --git a/tests/ztest/error_hook/src/main.c b/tests/ztest/error_hook/src/main.c
index 94af165..672573f 100644
--- a/tests/ztest/error_hook/src/main.c
+++ b/tests/ztest/error_hook/src/main.c
@@ -9,7 +9,7 @@
 #include <syscall_handler.h>
 #include <ztest_error_hook.h>
 
-#define STACK_SIZE (512 + CONFIG_TEST_EXTRA_STACKSIZE)
+#define STACK_SIZE (1024 + CONFIG_TEST_EXTRA_STACKSIZE)
 #define THREAD_TEST_PRIORITY 5
 
 static K_THREAD_STACK_DEFINE(tstack, STACK_SIZE);