gs101: uses Codec2 HIDL 1.2 service

- Include mediacodec_samsung setting from gs-common
- Enable Codec2 HIDL 1.2 from BoardConfig and update
manifest hidl version for samsung.hardware.media.c2

Bug: 318793681
Test: run cts -m CtsMediaDecoderTestCases
Test: run cts -m CtsMediaPlayerTestCases
Test: run vts -m vts_treble_vintf_vendor_test
Change-Id: I5679bee76ca0ff7f430797ed261069e0f7fc3937
diff --git a/BoardConfig-common.mk b/BoardConfig-common.mk
index d94a619..6fd0c2a 100644
--- a/BoardConfig-common.mk
+++ b/BoardConfig-common.mk
@@ -163,6 +163,7 @@
 # Video Codec
 ########################
 # 1. Exynos C2
+BOARD_USE_CODEC2_HIDL_1_2 := true
 BOARD_USE_CSC_FILTER := false
 BOARD_USE_DEC_SW_CSC := true
 BOARD_USE_ENC_SW_CSC := true