OMAP: DSS2: OMAPFB: Check var even if there isn't memory
OMAP: DSS2: OMAPFB: Check var even if there isn't memory

If video memory hasn't been allocate have check_fb_var() still check
most of the settings, just skip the ones involving the size of the
memory region. Also skip the memory address calculations in
omapfb_setup_overlay() if there's no memory.

Signed-off-by: Ville Syrjälä <cd6e8d405ca90be3a03d5427c5b24fbd2d68dcc4@nokia.com>
Signed-off-by: Tomi Valkeinen <e1ca4dbb8be1acaf20734fecd2da10ed1d46a9bb@nokia.com>

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