OMAP4/5: device: Add support to get the device type.

Add support to identify the device as GP/EMU/HS.

Signed-off-by: R Sricharan <r.sricharan@ti.com>
diff --git a/arch/arm/include/asm/arch-omap5/omap.h b/arch/arm/include/asm/arch-omap5/omap.h
index 7e17c76..2725392 100644
--- a/arch/arm/include/asm/arch-omap5/omap.h
+++ b/arch/arm/include/asm/arch-omap5/omap.h
@@ -136,6 +136,10 @@
 	unsigned int s32k_cr;	/* 0x10 */
 };
 
+#define DEVICE_TYPE_SHIFT 0x6
+#define DEVICE_TYPE_MASK (0x7 << DEVICE_TYPE_SHIFT)
+#define DEVICE_GP 0x3
+
 struct omap_sys_ctrl_regs {
 	u32 pad0[77]; /* 0x4A002000 */
 	u32 control_status; /* 0x4A002134 */