Add AOSP support for Cheetah and Panther.

We will have a 'vendor' project containing proprietary blobs
to be able to build and flash Pixel device when vendor source is not
available.
The project names are
platform/vendor/aosp/google_devices/cheetah
platform/vendor/aosp/google_devices/panther

and the paths are
vendor/google_devices/cheetah
vendor/google_devices/panther

TEST:make and flash a panther device

BUG: 217478568
Change-Id: Ibddebeab3cca4b4dfab12be519a099ca60ddd0c7

cheetah/BoardConfig.mk

@@ -21,5 +21,6 @@ USES_DEVICE_GOOGLE_CLOUDRIPPER := true
 
 include device/google/gs201/BoardConfig-common.mk
 -include vendor/google_devices/gs201/prebuilts/BoardConfigVendor.mk
+-include vendor/google_devices/cheetah/proprietary/BoardConfigVendor.mk
 include device/google/pantah-sepolicy/cheetah-sepolicy.mk
 include device/google/pantah/wifi/BoardConfig-wifi.mk

device-cheetah.mk

@@ -21,6 +21,7 @@ $(call inherit-product-if-exists, vendor/google_devices/pantah/prebuilts/device-
 $(call inherit-product-if-exists, vendor/google_devices/gs201/prebuilts/device-vendor.mk)
 $(call inherit-product-if-exists, vendor/google_devices/gs201/proprietary/device-vendor.mk)
 $(call inherit-product-if-exists, vendor/google_devices/pantah/proprietary/cheetah/device-vendor-cheetah.mk)
+$(call inherit-product-if-exists, vendor/google_devices/cheetah/proprietary/device-vendor.mk)
 
 DEVICE_PACKAGE_OVERLAYS += device/google/pantah/cheetah/overlay
 

device-panther.mk

@@ -21,6 +21,7 @@ $(call inherit-product-if-exists, vendor/google_devices/pantah/prebuilts/device-
 $(call inherit-product-if-exists, vendor/google_devices/gs201/prebuilts/device-vendor.mk)
 $(call inherit-product-if-exists, vendor/google_devices/gs201/proprietary/device-vendor.mk)
 $(call inherit-product-if-exists, vendor/google_devices/pantah/proprietary/panther/device-vendor-panther.mk)
+$(call inherit-product-if-exists, vendor/google_devices/panther/proprietary/device-vendor.mk)
 
 DEVICE_PACKAGE_OVERLAYS += device/google/pantah/panther/overlay
 

panther/BoardConfig.mk

@@ -21,5 +21,6 @@ USES_DEVICE_GOOGLE_CLOUDRIPPER := true
 
 include device/google/gs201/BoardConfig-common.mk
 -include vendor/google_devices/gs201/prebuilts/BoardConfigVendor.mk
+-include vendor/google_devices/panther/proprietary/BoardConfigVendor.mk
 include device/google/pantah-sepolicy/panther-sepolicy.mk
 include device/google/pantah/wifi/BoardConfig-wifi.mk