drivers: renesas: avs: Move to common

Move avs driver code to common directory, so that the same
code can be re-used by both R-Car Gen3 and RZ/G2 platforms.

Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
Reviewed-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Change-Id: I85d9fa8b6abf158ce2521f1696478f7c5339fc42
diff --git a/plat/renesas/rcar/platform.mk b/plat/renesas/rcar/platform.mk
index fc83cc5..35dd0ef 100644
--- a/plat/renesas/rcar/platform.mk
+++ b/plat/renesas/rcar/platform.mk
@@ -303,7 +303,7 @@
 			-Idrivers/renesas/rcar/board		\
 			-Idrivers/renesas/rcar/cpld/		\
 			-Idrivers/renesas/common/iic_dvfs	\
-			-Idrivers/renesas/rcar/avs		\
+			-Idrivers/renesas/common/avs		\
 			-Idrivers/renesas/common/delay		\
 			-Idrivers/renesas/common/rom		\
 			-Idrivers/renesas/common/scif		\
@@ -321,7 +321,6 @@
 			plat/renesas/rcar/plat_image_load.c		\
 			plat/renesas/rcar/bl2_cpg_init.c		\
 			drivers/renesas/rcar/rpc/rpc_driver.c		\
-			drivers/renesas/rcar/avs/avs_driver.c		\
 			drivers/renesas/rcar/board/board.c
 
 BL31_SOURCES	+=	plat/renesas/rcar/plat_topology.c		\