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/arch/m68k/kernel/asm-offsets.c b/arch/m68k/kernel/asm-offsets.c
index a972b00..8b7b228 100644
--- a/arch/m68k/kernel/asm-offsets.c
+++ b/arch/m68k/kernel/asm-offsets.c
@@ -77,7 +77,7 @@
 	DEFINE(BIR_SIZE, offsetof(struct bi_record, size));
 	DEFINE(BIR_DATA, offsetof(struct bi_record, data));
 
-	/* offsets into font_desc (drivers/video/console/font.h) */
+	/* offsets into the font_desc struct */
 	DEFINE(FONT_DESC_IDX, offsetof(struct font_desc, idx));
 	DEFINE(FONT_DESC_NAME, offsetof(struct font_desc, name));
 	DEFINE(FONT_DESC_WIDTH, offsetof(struct font_desc, width));