CHROMIUM: Add #line to fatal.c

Work around coreboot GCC preprocessor bug.

BUG=b:272518464
TEST=BOARD=screebo ; zmake build --coverage $BOARD &&
./util/find_non_exec_lines.py build/zephyr/$BOARD/output/zephyr.info

Change-Id: I622865b8b89f55f7408d125d9f5112c1aea15e29
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/third_party/zephyr/+/5604051
Reviewed-by: Abe Levkoy <alevkoy@chromium.org>
Commit-Queue: Jeremy Bettis <jbettis@chromium.org>
Tested-by: Jeremy Bettis <jbettis@chromium.org>

kernel/fatal.c

@@ -21,6 +21,7 @@
 #include <zephyr/fatal.h>
 #include <zephyr/debug/coredump.h>
 
+#line 25
 LOG_MODULE_DECLARE(os, CONFIG_KERNEL_LOG_LEVEL);
 
 /* LCOV_EXCL_START */