google/parrot/smihandler.c: Use `battery_critical_logged` only with `ELOG_GSMI`

Make the declaration and use of it conditional on the ELOG_GSMI Kconfig variable.

Change-Id: I2ef291d2f3e7d35545014e03ba8e0045da6050e5
Signed-off-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-on: http://review.coreboot.org/3987
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
diff --git a/src/mainboard/google/parrot/smihandler.c b/src/mainboard/google/parrot/smihandler.c
index 72a3a1b..4a189f8 100644
--- a/src/mainboard/google/parrot/smihandler.c
+++ b/src/mainboard/google/parrot/smihandler.c
@@ -94,7 +94,9 @@
 {
 	u8 src;
 	u32 pm1_cnt;
+#if CONFIG_ELOG_GSMI
 	static int battery_critical_logged;
+#endif
 
 	ec_kbc_write_cmd(0x56);
 	src = ec_kbc_read_ob();
@@ -106,8 +108,8 @@
 		if (!battery_critical_logged)
 			elog_add_event_byte(ELOG_TYPE_EC_EVENT,
 					    EC_EVENT_BATTERY_CRITICAL);
-#endif
 		battery_critical_logged = 1;
+#endif
 		break;
 	case EC_LID_CLOSE:
 		printk(BIOS_DEBUG, "LID CLOSED, SHUTDOWN\n");