[fb] Change to embedding PSF file

Moved old PSF parsing code from kernel, and switched to embedding whole
PSF instead of just glyph data to make font class the same code paths
for both cases.

src/include/j6/init.h

@@ -19,7 +19,7 @@ struct j6_init_value {
 
 /// Structure defining a framebuffer.
 /// `flags` has the following bits:
-///   0-3:   Pixel layout. 0000: bgr8, 0001: rgb8
+///   0-3:   Pixel layout. 0000: rgb8, 0001: bgr8
 struct j6_init_framebuffer {
 	void* addr;
 	size_t size;