Fix section mismatch warning in sm501fb:

WARNING: drivers/video/sm501fb.o(.text+0x21d6): Section mismatch in reference from the function sm501fb_init_fb() to the variable .devinit.data:sm501_default_mode
The function sm501fb_init_fb() references
the variable __devinitdata sm501_default_mode.
This is often because sm501fb_init_fb lacks a __devinitdata
annotation or the annotation of sm501_default_mode is wrong.
Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>