board: add support for ARC AXS101 Software Development Platform

The AXS101 Platform consists of a DesignWare AXC001 CPU
Card (with ARC 770D core) mounted on an
ARC Software Development Platform Mainboard with DesignWare peripherals:
 * SD/MMC contoller
 * Gigabit network contoller
 * Serial ports (8250-compatible)
 * USB 2.0
 * SPI
 * I2C

It also houses HDMI output for extrenal monitor connection.

Signed-off-by: Alexey Brodkin <[email protected]>
Cc: Anton Kolesov <[email protected]>
Cc: Thomas Petazzoni <[email protected]>
Cc: Peter Korsgaard <[email protected]>

Author: abrodkin

configs/axs101_defconfig

@@ -0,0 +1,25 @@
+BR2_arcle=y
+BR2_TOOLCHAIN_BUILDROOT_LARGEFILE=y
+BR2_TOOLCHAIN_BUILDROOT_INET_IPV6=y
+BR2_TOOLCHAIN_BUILDROOT_INET_RPC=y
+BR2_TOOLCHAIN_BUILDROOT_WCHAR=y
+BR2_PTHREAD_DEBUG=y
+BR2_TOOLCHAIN_BUILDROOT_CXX=y
+BR2_PACKAGE_HOST_GDB=y
+BR2_TARGET_GENERIC_HOSTNAME="axs101"
+BR2_TARGET_GENERIC_ISSUE="Welcome to the AXS101 Software Development Platform"
+# BR2_TARGET_GENERIC_GETTY is not set
+BR2_LINUX_KERNEL=y
+BR2_LINUX_KERNEL_CUSTOM_GIT=y
+BR2_LINUX_KERNEL_CUSTOM_REPO_URL="[email protected]/foss-for-synopsys-dwc-arc-processors/linux.git"
+BR2_LINUX_KERNEL_CUSTOM_REPO_VERSION="arc-3.15"
+BR2_LINUX_KERNEL_DEFCONFIG="axs101"
+BR2_PACKAGE_GDB=y
+BR2_PACKAGE_I2C_TOOLS=y
+BR2_PACKAGE_USBUTILS=y
+BR2_PACKAGE_LIBUSB_COMPAT=y
+BR2_PACKAGE_LMBENCH=y
+BR2_PACKAGE_LTP_TESTSUITE=y
+BR2_TARGET_ROOTFS_INITRAMFS=y
+BR2_TARGET_UBOOT=y
+BR2_TARGET_UBOOT_BOARDNAME="axs101"