drm/nouveau/clk: fix crystal frequency retrieval on nv25
drm/nouveau/clk: fix crystal frequency retrieval on nv25

Signed-off-by: Viktor Novotný <0d9dda77f90ca1337e60e142d96f0c729ca45163@seznam.cz>
Signed-off-by: Ben Skeggs <d9f27fb07c1e9f131223ad827fa5179f3846c30b@redhat.com>

KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs