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/mach-omap2/omap5/hwinit.c b/arch/arm/mach-omap2/omap5/hwinit.c
index c520a63..14a35dd 100644
--- a/arch/arm/mach-omap2/omap5/hwinit.c
+++ b/arch/arm/mach-omap2/omap5/hwinit.c
@@ -380,6 +380,9 @@
 	case DRA722_CONTROL_ID_CODE_ES2_0:
 		*omap_si_rev = DRA722_ES2_0;
 		break;
+	case DRA722_CONTROL_ID_CODE_ES2_1:
+		*omap_si_rev = DRA722_ES2_1;
+		break;
 	default:
 		*omap_si_rev = OMAP5430_SILICON_ID_INVALID;
 	}