Regression introduced by 31f731a drm/radeon/dpm: fix calculations in si_calculate_leakage_for_v_and_t_formula

[Konrad Rzeszutek Wilk]

Hey Alex,

Your recent patch "31f731a drm/radeon/dpm: fix calculations in
si_calculate_leakage_for_v_and_t_formula" causes a build regression:

drivers/built-in.o: In function `si_calculate_leakage_for_v_and_t_formula':
/home/build/linux-linus/drivers/gpu/drm/radeon/si_dpm.c:1770: undefined
reference to `__divdi3'

Which I think is due to the misplace parentheses.