Patch from Tony Lindgren

This patch syncs the mainline kernel with the linux-omap tree.
The highlights of the patch are:
- Register name clean-up. Mostly removes _REG from register names
  and replace OMAP1510P1 with OMAP1510. Also moves IO macros
  from hardware.h to io.h (Dirk Behme)
- Add DMA framebuffer hardware acceleration features (Imre Deak)
- Fix GPIO code not to do unnecessary address translations 
  between physical and virtual addresses (Juha Yrjölä)
- Misc updates, such as OMAP gpio export fixes, additional 
  multiplexing settings, include mach-types.h only where needed,
  show OMAP revision early during boot