mx6ul_14x14_evk: Add a README file

Add a README file to help users getting started with the board.

Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>

board/freescale/mx6ul_14x14_evk/README

+How to use U-boot on Freescale MX6UL 14x14 EVK
+-----------------------------------------------
+
+- Build U-boot for MX6UL 14x14 EVK:
+
+$ make mrproper
+$ make mx6ul_14x14_evk_defconfig
+$ make
+
+This will generate the SPL image called SPL and the u-boot.img.
+
+- Flash the SPL image into the micro SD card:
+
+sudo dd if=SPL of=/dev/mmcblk0 bs=1k seek=1; sync
+
+- Flash the u-boot.img image into the micro SD card:
+
+sudo dd if=u-boot.img of=/dev/mmcblk0 bs=1k seek=69; sync
+
+- Jumper settings:
+
+SW601: 0 0 1 0
+Sw602: 1 0
+
+where 0 means bottom position and 1 means top position (from the
+switch label numbers reference).
+
+- Connect the USB cable between the EVK and the PC for the console.
+(The USB console connector is the one close the push buttons)
+
+- Insert the micro SD card in the board, power it up and U-boot messages should
+come up.