UPSTREAM: mainboard/google/nocturne: Update GPIO_FCAM_PWR_EN

The FCAM_PWR_EN gpio should be GPP_B4 according to the latest board
schematics.

BUG=b:111331260
BRANCH=none
TEST=Make sure camera sensors are probed on the latest board.

Change-Id: Ic565e689a0d6247aa20158199eb9ff1126b664a7
Signed-off-by: Ricky Liang <jcliang@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/1133398
Reviewed-by: Benson Leung <bleung@google.com>
Commit-Queue: Benson Leung <bleung@google.com>
Tested-by: Benson Leung <bleung@google.com>
Trybot-Ready: Benson Leung <bleung@google.com>
diff --git a/src/mainboard/google/poppy/variants/nocturne/include/variant/gpio.h b/src/mainboard/google/poppy/variants/nocturne/include/variant/gpio.h
index 028db14..0853893 100644
--- a/src/mainboard/google/poppy/variants/nocturne/include/variant/gpio.h
+++ b/src/mainboard/google/poppy/variants/nocturne/include/variant/gpio.h
@@ -41,7 +41,7 @@
 #define GPIO_RCAM_PWR_EN	GPP_D7
 #define GPIO_PCH_RCAM_CLK_EN	GPP_D14
 #define GPIO_RCAM_RST_L		GPP_D16
-#define GPIO_FCAM_PWR_EN	GPP_D8
+#define GPIO_FCAM_PWR_EN	GPP_B4
 #define GPIO_PCH_FCAM_CLK_EN	GPP_D13
 #define GPIO_FCAM_RST_L		GPP_D15