gfrg200: don't include qualcomm_drivers or bcm_drivers in platform-only.

bcm_drivers is a bit funny; it auto-selects if you enable driver_moca2,
which our defconfig does, but driver_moca2 disables itself in platform-only
builds.  So not including bcm_drivers in the defconfig means that that will
be turned on/off as needed.

Change-Id: I149be718554970171d51e3499928d523ed7193ba
diff --git a/configs/gfrg200_defconfig b/configs/gfrg200_defconfig
index d3c6cfc..52fe513 100644
--- a/configs/gfrg200_defconfig
+++ b/configs/gfrg200_defconfig
@@ -87,7 +87,6 @@
 BR2_PACKAGE_GOOGLE_NETWORK_BOX=y
 BR2_PACKAGE_GOOGLE_STORAGE_BOX=y
 BR2_PACKAGE_CATAWAMPUS=y
-BR2_PACKAGE_BCM_DRIVERS=y
 BR2_PACKAGE_BCM_DRIVER_MOCA2=y
 BR2_PACKAGE_MINDSPEED_DRIVERS=y
 BR2_PACKAGE_MINDSPEED_DRIVER_PFE=y
diff --git a/package/qualcomm_drivers/Config.in b/package/qualcomm_drivers/Config.in
index e032e58..4616424 100644
--- a/package/qualcomm_drivers/Config.in
+++ b/package/qualcomm_drivers/Config.in
@@ -1,5 +1,6 @@
 menu "Qualcomm Drivers"
 	config BR2_PACKAGE_QUALCOMM_DRIVERS
 		bool "Enable Qualcomm drivers"
+		depends on !BR2_PACKAGE_GOOGLE_PLATFORM_ONLY
 		default n
 endmenu