arm: Add support for Qualcomm Snapdragon family

First supported chip is APQ8016 (that is compatible with MSM8916).
Drivers in SoC code:
- Reset controller (PSHOLD)
- Clock controller (very simple clock configuration for MMC and UART)

Signed-off-by: Mateusz Kulikowski <mateusz.kulikowski@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Tested-by: Simon Glass <sjg@chromium.org>
diff --git a/arch/arm/Makefile b/arch/arm/Makefile
index 09ba027..d516345 100644
--- a/arch/arm/Makefile
+++ b/arch/arm/Makefile
@@ -56,6 +56,7 @@
 machine-$(CONFIG_ORION5X)		+= orion5x
 machine-$(CONFIG_ARCH_S5PC1XX)		+= s5pc1xx
 machine-$(CONFIG_ARCH_SUNXI)		+= sunxi
+machine-$(CONFIG_ARCH_SNAPDRAGON)	+= snapdragon
 machine-$(CONFIG_ARCH_SOCFPGA)		+= socfpga
 machine-$(CONFIG_ARCH_ROCKCHIP)		+= rockchip
 machine-$(CONFIG_STM32)			+= stm32