media: s5p-jpeg: fix number of components macro

The value to be processed must be first masked and then shifted,
not the other way round.

Fixes: 6c96dbbc ("[media] s5p-jpeg: add support for 5433")

Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@samsung.com>
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>