Staging: w35und: merge rest of wbhal.c to phy_calibration.c

Impact: cleanup

The remaining functions are local to phy_calibration.c so move them
there and remove wbhal.c.

Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>