V4L/DVB (8129): pluto_set_dma_addr() fix

bogus cpu_to_le32() when passing dma address to hardware
via writel() - writel() converts itself.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>