arm: dra7xx: move CONFIG_DRA7XX to Kconfig

The symbol CONFIG_DRA7XX is needed for Kconfig conditions.

Cc: Lokesh Vutla <lokeshvutla@ti.com>
Signed-off-by: Uri Mashiach <uri.mashiach@compulab.co.il>
Reviewed-by: Tom Rini <trini@konsulko.com>
diff --git a/arch/arm/mach-omap2/omap5/Kconfig b/arch/arm/mach-omap2/omap5/Kconfig
index 4041adc..c89c438 100644
--- a/arch/arm/mach-omap2/omap5/Kconfig
+++ b/arch/arm/mach-omap2/omap5/Kconfig
@@ -1,11 +1,17 @@
 if OMAP54XX
 
+config DRA7XX
+	bool
+	help
+	  DRA7xx is an OMAP based SOC with Dual Core A-15s.
+
 choice
 	prompt "OMAP5 board select"
 	optional
 
 config TARGET_CL_SOM_AM57X
 	bool "CompuLab CL-SOM-AM57x"
+	select DRA7XX
 
 config TARGET_CM_T54
 	bool "CompuLab CM-T54"
@@ -16,12 +22,14 @@
 config TARGET_DRA7XX_EVM
 	bool "TI DRA7XX"
 	select BOARD_LATE_INIT
+	select DRA7XX
 	select TI_I2C_BOARD_DETECT
 	select PHYS_64BIT
 
 config TARGET_AM57XX_EVM
 	bool "AM57XX"
 	select BOARD_LATE_INIT
+	select DRA7XX
 	select TI_I2C_BOARD_DETECT
 
 endchoice