m7: move BOARD_PROVIDES_LIBRIL from common into device tree.

Change-Id: I60e09e219cc7e5afbeb4118808282f7fbf9bfc33
diff --git a/BoardConfig.mk b/BoardConfig.mk
index 9eba1f9..d86e7c1 100644
--- a/BoardConfig.mk
+++ b/BoardConfig.mk
@@ -43,6 +43,9 @@
 BOARD_USERDATAIMAGE_PARTITION_SIZE := 27917287424
 BOARD_FLASH_BLOCK_SIZE := 131072
 
+# RIL
+BOARD_PROVIDES_LIBRIL := true
+
 # cat /proc/emmc:
 # dev:        size     erasesize name
 # mmcblk0p19: 000ffa00 00000200 "misc"