ARM: renesas: Rename common/common.c to common/rcar64-common.c

The common.c content is specific to 64-bit R-Car SoCs, rename
the file to rcar64-common.c and remove R-Car 64-bit ifdeffery
in the file. No functional change.

Reviewed-by: Quentin Schulz <quentin.schulz@cherry.de>
Signed-off-by: Marek Vasut <marek.vasut+renesas@mailbox.org>

board/beacon/beacon-rzg2m/Makefile

@@ -6,4 +6,4 @@
 # SPDX-License-Identifier: GPL-2.0+
 #
 
-obj-y	:= beacon-rzg2m.o ../../renesas/common/gen3-common.o ../../renesas/common/common.o
+obj-y	:= beacon-rzg2m.o ../../renesas/common/gen3-common.o ../../renesas/common/rcar64-common.o

board/hoperun/hihope-rzg2/Makefile

@@ -6,4 +6,4 @@
 # SPDX-License-Identifier: GPL-2.0+
 #
 
-obj-y	:= hihope-rzg2.o ../../renesas/common/gen3-common.o ../../renesas/common/common.o
+obj-y	:= hihope-rzg2.o ../../renesas/common/gen3-common.o ../../renesas/common/rcar64-common.o

board/renesas/common/Makefile

@@ -18,7 +18,7 @@ endif
 # 64 bit SoCs
 ifdef CONFIG_RCAR_64
 ifndef CONFIG_XPL_BUILD
-obj-y	+= common.o
+obj-y	+= rcar64-common.o
 endif
 
 ifdef CONFIG_RCAR_GEN3

board/silinux/ek874/Makefile

@@ -9,5 +9,5 @@
 ifdef CONFIG_XPL_BUILD
 obj-y	:= ../../renesas/common/gen3-spl.o
 else
-obj-y	:= ek874.o ../../renesas/common/gen3-common.o ../../renesas/common/common.o
+obj-y	:= ek874.o ../../renesas/common/gen3-common.o ../../renesas/common/rcar64-common.o
 endif