V4L/DVB (7571): mt312: Cleanup buffer variables of read/write functions

Change type of buffer variables from void* to u8* to save some casts.

Signed-off-by: Matthias Schwarzott <zzam@gentoo.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
diff --git a/drivers/media/dvb/frontends/Makefile b/drivers/media/dvb/frontends/Makefile
index 23304b37..1293678 100644
--- a/drivers/media/dvb/frontends/Makefile
+++ b/drivers/media/dvb/frontends/Makefile
@@ -52,3 +52,4 @@
 obj-$(CONFIG_DVB_TUNER_MT2131) += mt2131.o
 obj-$(CONFIG_DVB_S5H1409) += s5h1409.o
 obj-$(CONFIG_DVB_TUNER_XC5000) += xc5000.o
+obj-$(CONFIG_DVB_TUNER_ITD1000) += itd1000.o