media: rc: fix kernel-doc parameter names

There are several parameters there that are named wrong, as
reported by those warnings:

	drivers/media/rc/ir-sharp-decoder.c:47: warning: No description found for parameter 'ev'
	drivers/media/rc/ir-sharp-decoder.c:47: warning: Excess function parameter 'duration' description in 'ir_sharp_decode'
	drivers/media/rc/ir-sanyo-decoder.c:56: warning: No description found for parameter 'ev'
	drivers/media/rc/ir-sanyo-decoder.c:56: warning: Excess function parameter 'duration' description in 'ir_sanyo_decode'
	drivers/media/rc/ir-xmp-decoder.c:43: warning: No description found for parameter 'ev'
	drivers/media/rc/ir-xmp-decoder.c:43: warning: Excess function parameter 'duration' description in 'ir_xmp_decode'
	drivers/media/rc/ir-jvc-decoder.c:47: warning: No description found for parameter 'ev'
	drivers/media/rc/ir-jvc-decoder.c:47: warning: Excess function parameter 'duration' description in 'ir_jvc_decode'
	drivers/media/rc/ir-lirc-codec.c:34: warning: No description found for parameter 'dev'
	drivers/media/rc/ir-lirc-codec.c:34: warning: No description found for parameter 'ev'
	drivers/media/rc/ir-lirc-codec.c:34: warning: Excess function parameter 'input_dev' description in 'ir_lirc_decode'
	drivers/media/rc/ir-lirc-codec.c:34: warning: Excess function parameter 'duration' description in 'ir_lirc_decode'

Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>