net: fec_mxc: add 1000 Mbps selection

Define FEC_QUIRK_ENET_MAC and add to
arch-mx6/imx-regs.h

Signed-off-by: Troy Kisky <troy.kisky@boundarydevices.com>
Acked-by: Dirk Behme <dirk.behme@de.bosch.com>
diff --git a/arch/arm/include/asm/arch-mx6/imx-regs.h b/arch/arm/include/asm/arch-mx6/imx-regs.h
index 3b5fd25..6b7589b 100644
--- a/arch/arm/include/asm/arch-mx6/imx-regs.h
+++ b/arch/arm/include/asm/arch-mx6/imx-regs.h
@@ -163,6 +163,7 @@
 #define CHIP_REV_1_0                 0x10
 #define IRAM_SIZE                    0x00040000
 #define IMX_IIM_BASE                 OCOTP_BASE_ADDR
+#define FEC_QUIRK_ENET_MAC
 
 #define GPIO_NUMBER(port, index)		((((port)-1)*32)+((index)&31))
 #define GPIO_TO_PORT(number)		(((number)/32)+1)