Patch from Tony Lindgren

This patch syncs the mainline kernel with the linux-omap tree.
The highlights of the patch are:
- Add OMAP board specific low-level init functions for smc91x Ethernet
- DMA audio functions by Nishant Menon
- Remove references to OMAP specific serial.h

This is an updated version of ARM patch 2331/1 with extra comments
added to the omap_get_dma_src_pos() and omap_get_dma_dst_pos() functions
as recommended by RMK.

Signed-off-by: Tony Lindgren
Signed-off-by: Russell King