media: mb86a20s: Fix TS parallel mode

commit 9d32069faacdc81fe1dcb5d297c32a3ac81da8f0 upstream.

changeset 768e6dad caused a regression on using mb86a20s
in parallel mode, as the parallel mode selection got
overriden by mb86a20s_init2.

Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>