CHROMIUM: Add #line to pm.c

Work around coreboot GCC preprocessor bug.

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

Change-Id: I688665b936ef08fe893ede2202e3028c3a7586d4
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/third_party/zephyr/+/5762784
Tested-by: Jeremy Bettis <jbettis@chromium.org>
Commit-Queue: Jeremy Bettis <jbettis@chromium.org>
Reviewed-by: Abe Levkoy <alevkoy@chromium.org>
Auto-Submit: Jeremy Bettis <jbettis@chromium.org>

subsys/pm/pm.c

@@ -29,6 +29,7 @@
 #include <zephyr/logging/log.h>
 LOG_MODULE_REGISTER(pm, CONFIG_PM_LOG_LEVEL);
 
+#line 33
 static ATOMIC_DEFINE(z_post_ops_required, CONFIG_MP_MAX_NUM_CPUS);
 static sys_slist_t pm_notifiers = SYS_SLIST_STATIC_INIT(&pm_notifiers);