device/lynx: Add adaptive haptics feature flag

Add adaptive haptics feature flag to device-lynx.mk to enable feature in
vibrator HAL.

Bug: 198239103
Test: Verified on device
Change-Id: I2fee6f06bfff33b7044516a4022b16bd76a4beb5
Signed-off-by: Chris Paulo <chrispaulo@google.com>

device-lynx.mk

@@ -152,6 +152,7 @@ include device/google/gs101/fingerprint/udfps_factory.mk
 endif
 
 # Vibrator HAL
+ADAPTIVE_HAPTICS_FEATURE := adaptive_haptics_v1
 PRODUCT_VENDOR_PROPERTIES += \
 	ro.vendor.vibrator.hal.supported_primitives=243 \
 	ro.vendor.vibrator.hal.f0.comp.enabled=1 \