[WCNCR00146539] misc: fix compilation errors with kernel 2.6.32

[Description]
Fix compilation errors with kernel 2.6.32.
Replace get_monotonic_boottime() with ktime_get() function
for old kernel version.

Change-Id: I2b51c0e6fae6a012524ac1169007bc6570ac36ae
Feature: misc
Signed-off-by: Awk Jiang <awk.jiang@mediatek.com>
CR-Id: WCNCR00146539
1 file changed