lib: Move fonts from drivers/video/console/ to lib/fonts/

Several drivers need font support independent of CONFIG_VT, cfr. commit
9cbce8d7e1dae0744ca4f68d62aa7de18196b6f4, "console/font: Refactor font
support code selection logic").
Hence move the fonts and their support logic from drivers/video/console/ to
its own library directory lib/fonts/.
This also allows to limit processing of drivers/video/console/Makefile to
CONFIG_VT=y again.

[Kevin Hilman <khilman@linaro.org>: Update arch/arm/boot/compressed/Makefile]
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
diff --git a/Documentation/DocBook/device-drivers.tmpl b/Documentation/DocBook/device-drivers.tmpl
index c36892c..fca3419 100644
--- a/Documentation/DocBook/device-drivers.tmpl
+++ b/Documentation/DocBook/device-drivers.tmpl
@@ -297,10 +297,10 @@
      </sect1>
      <sect1><title>Frame Buffer Fonts</title>
         <para>
-           Refer to the file drivers/video/console/fonts.c for more information.
+           Refer to the file lib/fonts/fonts.c for more information.
         </para>
 <!-- FIXME: Removed for now since no structured comments in source
-X!Idrivers/video/console/fonts.c
+X!Ilib/fonts/fonts.c
 -->
      </sect1>
   </chapter>