V4L/DVB (6019): cx88: Make card database more memory efficient

The vmux setting is only two bits, but was taking up a whole 32 
in the input description struct.  By changing it to a two-bit 
bitfield, it can fit in what was padding space before and drop 
the input size by 4 bytes, from 28 to 24. This drops the board 
description struct, which has 9 inputs, from 280 to 244 bytes.  
Total driver size decreases by 2108 bytes.
Signed-off-by: NTrent Piepho <xyzzy@speakeasy.org>
Signed-off-by: NMauro Carvalho Chehab <mchehab@infradead.org>

drivers/media/video/cx88/cx88.h

@@ -226,8 +226,8 @@ enum cx88_itype {
 
 struct cx88_input {
 	enum cx88_itype type;
-	unsigned int    vmux;
 	u32             gpio0, gpio1, gpio2, gpio3;
+	unsigned int    vmux:2;
 	unsigned int    extadc:1;
 };