In linux-v5.6 release:

'struct timespec' got unsupported for in-kernel use at
	commit c766d1472c70d25ad475cf56042af1652e792b23 ("y2038: hide
	timeval/timespec/itimerval/itimerspec types")

And accordingly, the 32 bit interfaces were also removed at
	commit 412c53a680a97cb1ae2c0ab60230e193bee86387 ("y2038: remove
	unused time32 interfaces")

Thus, use 'struct timespec64' and related interfaces for 5.10.65 kernel.
Signed-off-by: Vaibhav Gupta <vaibhav.gupta@cern.ch>