Xilinx fixes for v2017.05

- Fix usbotg on Miami board
 - Cleanup zc1751 defconfig
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Merge tag 'xilinx-fixes-for-v2017.05' of git://www.denx.de/git/u-boot-microblaze

Xilinx fixes for v2017.05

- Fix usbotg on Miami board
- Cleanup zc1751 defconfig

arch/arm/dts/zynq-topic-miami.dts

@@ -19,6 +19,7 @@
 		i2c0 = &i2c0;
 		i2c1 = &i2c1;
 		mmc0 = &sdhci0;
+		usbotg0 = &usb0;
 	};
 
 	memory@0 {

configs/xilinx_zynqmp_zc1751_xm016_dc2_defconfig

@@ -3,7 +3,6 @@ CONFIG_SYS_CONFIG_NAME="xilinx_zynqmp_zc1751_xm016_dc2"
 CONFIG_ARCH_ZYNQMP=y
 CONFIG_SYS_TEXT_BASE=0x8000000
 CONFIG_SYS_MALLOC_F_LEN=0x8000
-# CONFIG_SPL_MMC_SUPPORT is not set
 # CONFIG_SPL_LIBDISK_SUPPORT is not set
 # CONFIG_SPL_FAT_SUPPORT is not set
 CONFIG_ZYNQMP_USB=y