microblaze: Make timer driver endian aware
microblaze: Make timer driver endian aware

Detect endianess directly on the hardware and use
ioread/iowrite functions.

Signed-off-by: Michal Simek <b20e59da6aeb5cea6c82b021069d69f63616c55d@xilinx.com>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs