staging: sm750fb: change definition of POWER_MODE_CTRL multi-bit field

Use more straight-forward definitions for multi-bit field of
POWER_MODE_CTRL register and use open-coded implementation for register
manipulations.

Signed-off-by: Mike Rapoport <mike.rapoport@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2 files changed