kbuild: drivers/video/logo/ - fix ident glitch

Jan Engelhardt <jengelh@linux01.gwdg.de> wrote:
while compiling 2.6.17-rc2 with allyesconfig, this showed up:
...
  LOGO  drivers/video/logo/logo_superh_clut224.c
  CC      drivers/video/logo/logo_linux_mono.o
...

A tab had sneaked in. Convert it to a few spaces.
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>

drivers/video/logo/Makefile

@@ -34,7 +34,7 @@ extra-y += $(call logo-cfiles,_clut224,ppm)
 extra-y += $(call logo-cfiles,_gray256,pgm)
 
 # Create commands like "pnmtologo -t mono -n logo_mac_mono -o ..."
-quiet_cmd_logo = LOGO	$@
+quiet_cmd_logo = LOGO    $@
 	cmd_logo = scripts/pnmtologo \
 			-t $(patsubst $*_%,%,$(notdir $(basename $<))) \
 			-n $(notdir $(basename $<)) -o $@ $<