microblaze: delay.h fix udelay and ndelay for 8 bit args

Based on:
"asm-generic: delay.h fix udelay and ndelay for 8 bit args"
(sha1: a87e553fabe8ceadc6f90889066559234cf194c7)

Signed-off-by: Michal Simek <michal.simek@xilinx.com>
1 file changed