Add DCK eligibility property

Add ro.gms.dck.eligible_wcc system property to
P21 devices.

Usage of ro.gms.dck.eligible_wcc is as follows:
1: NFC only
2: NFC and Bluetooth LE (NFC + RKE Functions)
3: NFC, Bluetooth LE, and UWB (NFC + RKE Functions + Passive/Location-based
   Functions)

Bug: 186488185

Test: Build and flash on R4.
Confirm GMSCore can access the properties.

Signed-off-by: Michael Ayoubi <mayoubi@google.com>
Change-Id: I6641270ede1ac49b517775ce3444306c50bcd78a
diff --git a/device-raven.mk b/device-raven.mk
index 83dd670..2a689af 100644
--- a/device-raven.mk
+++ b/device-raven.mk
@@ -133,3 +133,7 @@
 # Keyboard side padding in dp for portrait mode
 PRODUCT_PRODUCT_PROPERTIES += ro.com.google.ime.kb_pad_port_r=11
 PRODUCT_PRODUCT_PROPERTIES += ro.com.google.ime.kb_pad_port_l=11
+
+# DCK properties based on target
+PRODUCT_PROPERTY_OVERRIDES += \
+    ro.gms.dck.eligible_wcc=3