Return value was not set to 0 in setcolreg() with truecolor modes. This causes
fb_set_cmap() to abort after first color, resulting in blank palette - and
blank console in 24bpp and 32bpp modes.
Signed-off-by: NOndrej Zary <linux@rainbow-software.org>
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>