Sys_mmap returns 'unsigned long' value. Contrary to x64, ARM has 32bit size of
'unsigned long'. If sys_mmap returns 32bit value, higher 32bit will be filled
0xffffffff.
Signed-off-by: Chanho Park <chanho61.park@samsung.com>
Signed-off-by: Myungjoo Ham <myungjoo.ham@samsung.com>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>