CHROUMIUM: Add #line to flash_npcx_fiu_nor.c

Work around coreboot GCC preprocessor bug.

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

Change-Id: Ia29bc5aed7c6d1c8353b35d545c1d523cc7cf1eb
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/third_party/zephyr/+/5667821
Commit-Queue: Al Semjonovs <asemjonovs@google.com>
Auto-Submit: Jeremy Bettis <jbettis@chromium.org>
Reviewed-by: Al Semjonovs <asemjonovs@google.com>
Tested-by: Jeremy Bettis <jbettis@chromium.org>

drivers/flash/flash_npcx_fiu_nor.c

@@ -27,6 +27,7 @@
 #include "spi_nor.h"
 
 #include <zephyr/logging/log.h>
+#line 31
 LOG_MODULE_REGISTER(flash_npcx_fiu_nor, CONFIG_FLASH_LOG_LEVEL);
 
 #define BLOCK_64K_SIZE KB(64)