ARM: DRA722: Add support for DRA71x Silicon Rev 2.1

DRA71x processors are reduced pin and software compatible
derivative of DRA72 processors.

Silicon Rev 2.1 is a minor variant of DRA71x Rev 2.0 with
various fixes including the following:
 - NAND boot fixes
 - ROM update for secure boot crypto enhancement
Signed-off-by: Vishal Mahaveer <vishalm@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

arch/arm/mach-omap2/id.c

@@ -693,9 +693,12 @@ void __init dra7xxx_check_revision(void)
 			omap_revision = DRA722_REV_ES1_0;
 			break;
 		case 1:
-		default:
 			omap_revision = DRA722_REV_ES2_0;
 			break;
+		case 2:
+		default:
+			omap_revision = DRA722_REV_ES2_1;
+			break;
 		}
 		break;
 

arch/arm/mach-omap2/soc.h

@@ -396,6 +396,7 @@ IS_OMAP_TYPE(3430, 0x3430)
 #define DRA752_REV_ES2_0	(DRA7XX_CLASS | (0x52 << 16) | (0x20 << 8))
 #define DRA722_REV_ES1_0	(DRA7XX_CLASS | (0x22 << 16) | (0x10 << 8))
 #define DRA722_REV_ES2_0	(DRA7XX_CLASS | (0x22 << 16) | (0x20 << 8))
+#define DRA722_REV_ES2_1	(DRA7XX_CLASS | (0x22 << 16) | (0x21 << 8))
 
 void omap2xxx_check_revision(void);
 void omap3xxx_check_revision(void);