V4L/DVB (13915): em28xx: fix a typo on RC6 modes

Thanks to: Devin Heitmueller <dheitmueller@kernellabs.com> for double
checking it.
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

drivers/media/video/em28xx/em28xx-reg.h

@@ -173,8 +173,8 @@
 /* em2874 IR config register (0x50) */
 #define EM2874_IR_NEC           0x00
 #define EM2874_IR_RC5           0x04
-#define EM2874_IR_RC5_MODE_0    0x08
-#define EM2874_IR_RC5_MODE_6A   0x0b
+#define EM2874_IR_RC6_MODE_0    0x08
+#define EM2874_IR_RC6_MODE_6A   0x0b
 
 /* em2874 Transport Stream Enable Register (0x5f) */
 #define EM2874_TS1_CAPTURE_ENABLE (1 << 0)