x86: Support Intel Cherry Hill board

This adds support to Intel Cherry Hill board, a board based on
Intel Braswell SoC. The following devices are validated:

- serial port as the serial console
- on-board Realtek 8169 ethernet controller
- SATA AHCI controller
- EMMC/SDHC controller
- USB 3.0 xHCI controller
- PCIe x1 slot with a graphics card
- ICH SPI controller with an 8MB Macronix SPI flash
- Integrated graphics device as the video console

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
diff --git a/board/intel/Kconfig b/board/intel/Kconfig
index d7d950e..4ebf808 100644
--- a/board/intel/Kconfig
+++ b/board/intel/Kconfig
@@ -18,6 +18,15 @@
 	  4GB memory, HDMI/DP/VGA display, HD audio, SATA, USB2, USB3, SD, eMMC,
 	  PCIe and some other sensor interfaces.
 
+config TARGET_CHERRYHILL
+	bool "Cherry Hill"
+	help
+	  This is the Intel Cherry Hill Customer Reference Board. It is in a
+	  mini-ITX form factor containing the Intel Braswell SoC, which has
+	  a 64-bit quad-core, single-thread, Intel Atom processor, along with
+	  serial console, 10/100/1000 Ethernet, SD-Card, USB 2/3, SATA, PCIe,
+	  some GPIOs, one HDMI and two DP video out.
+
 config TARGET_COUGARCANYON2
 	bool "Cougar Canyon 2"
 	help
@@ -69,6 +78,7 @@
 endchoice
 
 source "board/intel/bayleybay/Kconfig"
+source "board/intel/cherryhill/Kconfig"
 source "board/intel/cougarcanyon2/Kconfig"
 source "board/intel/crownbay/Kconfig"
 source "board/intel/edison/Kconfig"