arm: imx53: Add support for imx53 boards from K+P

This commit adds support for DDC and HSC boards from
K+P in u-boot.

Console output:

U-Boot 2018.05-rc2-00090-g752b7ed6f9 (Apr 26 2018 - 14:24:24 +0200)

CPU:   Freescale i.MX53 rev2.1 at 800 MHz
Reset cause: WDOG
Model: K+P iMX53
DRAM:  512 MiB
MMC:   FSL_SDHC: 0
Loading Environment from MMC... OK
In:    serial
Out:   serial
Err:   serial
Module EEPROM:
  ID: TQMa53-CB.0401
  SN: 63152762
  MAC: 00:0b:64:03:14:2a
BBoard:40x0 Rev:10
Net:   eth0: ethernet@63fec000
Hit any key to stop autoboot:  0

Signed-off-by: Lukasz Majewski <lukma@denx.de>
diff --git a/board/k+p/kp_imx53/Kconfig b/board/k+p/kp_imx53/Kconfig
new file mode 100644
index 0000000..017c1e3
--- /dev/null
+++ b/board/k+p/kp_imx53/Kconfig
@@ -0,0 +1,15 @@
+if TARGET_KP_IMX53
+
+config SYS_BOARD
+	default "kp_imx53"
+
+config SYS_VENDOR
+	default "k+p"
+
+config SYS_SOC
+	default "mx5"
+
+config SYS_CONFIG_NAME
+	default "kp_imx53"
+
+endif