ARM: DRA72x: Add support for detection of DRA71x SR 2.1

DRA71x processors are reduced pin and software compatible
derivative of DRA72 processors. Add support for detection
of SR2.1 version of DRA71x family of processors.

Signed-off-by: Vishal Mahaveer <vishalm@ti.com>
Reviewed-by: Lokesh Vutla <lokeshvutla@ti.com>
diff --git a/arch/arm/include/asm/omap_common.h b/arch/arm/include/asm/omap_common.h
index 8b296c9..481e938 100644
--- a/arch/arm/include/asm/omap_common.h
+++ b/arch/arm/include/asm/omap_common.h
@@ -776,6 +776,7 @@
 #define DRA752_ES2_0	0x07520200
 #define DRA722_ES1_0	0x07220100
 #define DRA722_ES2_0	0x07220200
+#define DRA722_ES2_1	0x07220210
 
 /*
  * silicon device type