Staging: winbond: fix some checkpatch.pl issues in phy_calibration.c

This is a patch to the phy_calibration.c that fixes up almost all
warnings and errors (except 80 characters limit and lack of tabs errors)
found by the checkpatch.pl tool

Signed-off-by: Timofey Trofimov <tumoxep@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>