ARM: i.MX6: add more chip revision support

Add more revision support for the new i.MX6DQ tape-out (TO1.5).  This
TO1.5 is the Rev 1.3 as documented in i.MX6DQ data sheet, because TO1.3
and TO1.4 are never revealed.
Signed-off-by: NJason Liu <r64343@freescale.com>
Signed-off-by: NShawn Guo <shawn.guo@freescale.com>
Acked-by: NSascha Hauer <s.hauer@pengutronix.de>

arch/arm/mach-imx/anatop.c

@@ -104,6 +104,19 @@ void __init imx_init_revision_from_anatop(void)
 	case 2:
 		revision = IMX_CHIP_REVISION_1_2;
 		break;
+	case 3:
+		revision = IMX_CHIP_REVISION_1_3;
+		break;
+	case 4:
+		revision = IMX_CHIP_REVISION_1_4;
+		break;
+	case 5:
+		/*
+		 * i.MX6DQ TO1.5 is defined as Rev 1.3 in Data Sheet, marked
+		 * as 'D' in Part Number last character.
+		 */
+		revision = IMX_CHIP_REVISION_1_5;
+		break;
 	default:
 		revision = IMX_CHIP_REVISION_UNKNOWN;
 	}

arch/arm/mach-imx/mxc.h

@@ -43,6 +43,8 @@
 #define IMX_CHIP_REVISION_1_1		0x11
 #define IMX_CHIP_REVISION_1_2		0x12
 #define IMX_CHIP_REVISION_1_3		0x13
+#define IMX_CHIP_REVISION_1_4		0x14
+#define IMX_CHIP_REVISION_1_5		0x15
 #define IMX_CHIP_REVISION_2_0		0x20
 #define IMX_CHIP_REVISION_2_1		0x21
 #define IMX_CHIP_REVISION_2_2		0x22