msm: vidc: Correct pictype decode control

Bitmask controls need to have 0 as min value or they fail
to initialize. Set min value for pictype decode control
to zero.

CRs-Fixed: 2201206
Change-Id: I9f7ec54f4ae1ddd22fd66254fd6dfc8ad512e4fe
Signed-off-by: Vaibhav Deshu Venkatesh <vdeshuve@codeaurora.org>