ARM: OMAP4+: Make control module register structure generic

A seperate omap_sys_ctrl_regs structure is defined for
omap4 & 5. If there is any change in control module for
any of the ES versions, a new structure needs to be created.
In order to remove this dependency, making the register
structure generic for all the omap4+ boards.

Signed-off-by: R Sricharan <r.sricharan@ti.com>
Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
Reviewed-by: Tom Rini <trini@ti.com>
diff --git a/arch/arm/cpu/armv7/omap-common/hwinit-common.c b/arch/arm/cpu/armv7/omap-common/hwinit-common.c
index fff89da..e5a5eb6 100644
--- a/arch/arm/cpu/armv7/omap-common/hwinit-common.c
+++ b/arch/arm/cpu/armv7/omap-common/hwinit-common.c
@@ -238,10 +238,7 @@
  */
 u32 get_device_type(void)
 {
-	struct omap_sys_ctrl_regs *ctrl =
-		      (struct omap_sys_ctrl_regs *) SYSCTRL_GENERAL_CORE_BASE;
-
-	return (readl(&ctrl->control_status) &
+	return (readl((*ctrl)->control_status) &
 				      (DEVICE_TYPE_MASK)) >> DEVICE_TYPE_SHIFT;
 }