Remove the use of BUS_ID_SIZE from txx9aclc.c, as BUS_ID_SIZE will be
removed soon later.

Also, use snprintf() instead of sprintf() as a safer operation.
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

This patch adds support for the integrated ACLC of the TXx9 family.
Signed-off-by: NAtsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>