ARM: at91: change board files into SoC files

As board files are now DT only and can address all aspects of the SoC family,
we can rename them so that the mach-at91 directory looks cleaner.

Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
diff --git a/arch/arm/mach-at91/Makefile b/arch/arm/mach-at91/Makefile
index 3362f51..827fdbc 100644
--- a/arch/arm/mach-at91/Makefile
+++ b/arch/arm/mach-at91/Makefile
@@ -7,14 +7,9 @@
 obj-$(CONFIG_SOC_AT91SAM9)	+= sam9_smc.o
 
 # CPU-specific support
-obj-$(CONFIG_SOC_AT91RM9200)	+= at91rm9200_time.o
-
-# AT91SAM board with device-tree
-obj-$(CONFIG_SOC_AT91RM9200) += board-dt-rm9200.o
-obj-$(CONFIG_SOC_AT91SAM9) += board-dt-sam9.o
-
-# SAMA5 board with device-tree
-obj-$(CONFIG_SOC_SAMA5)		+= board-dt-sama5.o
+obj-$(CONFIG_SOC_AT91RM9200)	+= at91rm9200.o at91rm9200_time.o
+obj-$(CONFIG_SOC_AT91SAM9)	+= at91sam9.o
+obj-$(CONFIG_SOC_SAMA5)		+= sama5.o
 
 # Power Management
 obj-$(CONFIG_PM)		+= pm.o