drivers: IPM: Access 32-bit IPM registers right way

The current method of accessing 32-bit data and control registers does
not work for all quark architectures. Sometimes writing to those
registers byte-by-byte results in last byte occupying whole 32 bit
register.

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
1 file changed