[msm7630] Add support for msm7630 basic bootup

Add support for basic bootup for msm7630:
 * Adding msm7630 as a new platform and surf as a new target
 * GP & DG timer base address changes
 * NAND, data mover, proc comm, usb base address changes
 * Fix aboot to work with 4K page nand instead of hardcoding 2K page
 * Also fix cpu init for qsd8k
21 files changed