parse_em28xx_drxk.pl: Add more register definitions

parse_em28xx_drxk.pl: Add more register definitions

The af6007 file has a different driver for DRX-K, with more register
definitions. Add the registers found there also, in order to provide
a more complete parser.

After adding these, there are now only 3 messages that aren't
parsed from a Terratec H5 device:

read32_flags(state, 0x52, 0x026001ec, 0x00000000, 0x90);
read32_flags(state, 0x52, 0x026001ec, 0x00000000, 0x90);
write16_flags(state, 0x52, 0x008206fe, 0x00f00022, 0xc0);

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