AM35x: Add support for AM3517EVM

This patch adds basic support for the AM3517EVM.
It includes:
	- Board files (.c and .h)
	- Default configuration file
	- Updates for Makefile

Signed-off-by: Vaibhav Hiremath <hvaibhav@ti.com>
Signed-off-by: Sanjeev Premi <premi@ti.com>
Signed-off-by: Sandeep Paulraj <s-paulraj@ti.com>
8 files changed