ARM: OMAP2: TI81XX: id: Add cpu id for TI816x ES2.0 and ES2.1

Currently omap3xxx_check_revision() detects ES1.0 and ES1.1 only,
this patch extends it by adding ES2.0 and ES2.1 versions support.

Signed-off-by: Aida Mynzhasova <aida.mynzhasova@skitlab.ru>
Signed-off-by: Tony Lindgren <tony@atomide.com>
diff --git a/arch/arm/mach-omap2/id.c b/arch/arm/mach-omap2/id.c
index 74f71ab..9e5c7cb 100644
--- a/arch/arm/mach-omap2/id.c
+++ b/arch/arm/mach-omap2/id.c
@@ -407,11 +407,18 @@
 			cpu_rev = "1.0";
 			break;
 		case 1:
-		/* FALLTHROUGH */
-		default:
 			omap_revision = TI8168_REV_ES1_1;
 			cpu_rev = "1.1";
 			break;
+		case 2:
+			omap_revision = TI8168_REV_ES2_0;
+			cpu_rev = "2.0";
+			break;
+		case 3:
+			/* FALLTHROUGH */
+		default:
+			omap_revision = TI8168_REV_ES2_1;
+			cpu_rev = "2.1";
 		}
 		break;
 	case 0xb944:
diff --git a/arch/arm/mach-omap2/soc.h b/arch/arm/mach-omap2/soc.h
index 3cefc49..9cd9414 100644
--- a/arch/arm/mach-omap2/soc.h
+++ b/arch/arm/mach-omap2/soc.h
@@ -403,6 +403,8 @@
 #define TI816X_CLASS		0x81600034
 #define TI8168_REV_ES1_0	TI816X_CLASS
 #define TI8168_REV_ES1_1	(TI816X_CLASS | (0x1 << 8))
+#define TI8168_REV_ES2_0	(TI816X_CLASS | (0x2 << 8))
+#define TI8168_REV_ES2_1	(TI816X_CLASS | (0x3 << 8))
 
 #define TI814X_CLASS		0x81400034
 #define TI8148_REV_ES1_0	TI814X_CLASS