This 2/3 patch moves omap alsa aic23 driver files to sound/arm/omap
directory.

In addition it adds cleaner separation of codec specific functionality
from the other functionality so that the same code can also be used by
the tsc2101 driver.

Structures required by the platform driver are now in
include/asm-arm/arch-omap/omap-alsa.h.

Unlike in the previous review, all other files required by this driver
are now located in the sound/arm/omap directory. MCBSP settings required
by the alsa driver are now initialized in the omap OSK board-code. Codec
specific function pointers are now initialized in the codec-file.
(omap-alsa-aic23.c)
Signed-off-by: Mika Laitio <lamikr@cc.jyu.fi>
Signed-off-by: Daniel Petrini <d.pensator@gmail.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>