This patch allows for easy integration of a custom Linux boot logo to
replace the Tux' being shown by default.

Use gimp or the like to create a raw PPM in your desired resolution.

Reduce the number of colours in the image to 224:

  user@host:~$ ppmquant 224 Toradex-640x480.ppm > \
    Toradex-640x480-224.ppm
  ppmquant: making histogram...
  ppmquant: 370 colors found
  ppmquant: choosing 224 colors...
  ppmquant: mapping image to new colors...

Convert it from raw PPM to ASCII format:

  user@host:~$ pnmnoraw Toradex-640x480-224.ppm > \
    Toradex-640x480-ascii-224.ppm

Copy it into the Linux sources:

  cp Toradex-640x480-ascii-224.ppm linux-toradex/drivers/video/logo/\
    logo_custom_clut224.ppm

Activate exclusively custom Linux logo in the kernel configuration:

  Device Drivers -> Graphics support -> Bootup logo ->
    Custom 224-color Linux logo

And re-compile the kernel.

Now we have __initconst, we can finally move the external declarations for
the various Linux logo structures to <linux/linux_logo.h>.

James' ack dates back to the previous submission (way to long ago), when the
logos were still __initdata, which caused failures on some platforms with some
toolchain versions.

Signed-off-by: Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com>
Acked-by: James Simmons <jsimmons@infradead.org>
Cc: Krzysztof Helt <krzysztof.h1@poczta.fm>
Cc: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

Add fb_append_extra_logo(), to append extra lines of logos below the standard
Linux logo.

Signed-off-by: Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com>
Signed-off-by: Geoff Levand <geoffrey.levand@am.sony.com>
Acked-By: James Simmons <jsimmons@infradead.org>
Cc: "Antonino A. Daplas" <adaplas@pol.net>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!