V4L/DVB (6181): cx88: auto-load rtc and ir receiver i2c modules for FusionHDTV5 RT Gold

Auto-load ir-kbd-i2c for ir receiver support, and rtc-isl1208 for rtc 
support for the FusionHDTV5 RT Gold.

Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>