misc: sgi-gru: use time_before()
misc: sgi-gru: use time_before()

To be future-proof and for better readability the time comparisons are
modified to use time_before() instead of plain, error-prone math.

Signed-off-by: Manuel Schölling <4ee0d7378f23119b0354d244027bbe5e74d3b1ce@gmx.de>
Acked-by: Dimitri Sivanich <eb9314cd9fb6c9c1ab10792809da7e2f4af25acd@sgi.com>
Signed-off-by: Sudip Mukherjee <8ebcb270388efeefbc3b674e2d51f150dd6e6b25@vectorindia.org>
Signed-off-by: Greg Kroah-Hartman <4645f7897fd33786a2ee1264d590b3c400559d85@linuxfoundation.org>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs