microblaze: io.h: Add io big-endian function
microblaze: io.h: Add io big-endian function

Add new io big-endian function. They will be used
for uartlite and spi driver.

Signed-off-by: John Linn <dbd415a4cc0aefa8fab2e01649bb25d314d78192@xilinx.com>
Signed-off-by: Michal Simek <3a191dd2be46e826fee926d532b136ed65cb5318@monstr.eu>

KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas