loaders: ByteUtils: Correct comments in header.
loaders: ByteUtils: Correct comments in header.

The comments in the header were wrongly defining
the return value as a number of bytes instead of
number of sucesful conversions.

Signed-off-by: Cyril Hrubis <b1e90efd3b808b8e0bcf2a9a55fd8b9a779bfd81@ucw.cz>

gfxprim/gfxprim,gfxprim/gfxprim,gfxprim/gfxprim,gfxprim/gfxprim,gfxprim/gfxprim