otter: Adjust override prop key names

Change-Id: Iaa96fd777196fe90f408457a580b80d86b041140
diff --git a/lineage_otter.mk b/lineage_otter.mk
index 0a023fb..3e631a7 100644
--- a/lineage_otter.mk
+++ b/lineage_otter.mk
@@ -24,11 +24,8 @@
 PRODUCT_MODEL := SHIFTphone 8
 PRODUCT_MANUFACTURER := SHIFT
 
-PRODUCT_SYSTEM_NAME := otter
-
 PRODUCT_GMS_CLIENTID_BASE := android-uniscope
 
 PRODUCT_BUILD_PROP_OVERRIDES += \
-    TARGET_PRODUCT=$(PRODUCT_SYSTEM_NAME)
-
-BUILD_FINGERPRINT := SHIFT/otter/otter:14/SOS.6.0.20241030/20241030:user/release-keys
+    BuildFingerprint=SHIFT/otter/otter:14/SOS.6.0.20241030/20241030:user/release-keys \
+    DeviceProduct=otter