msm: vidc: Send appropriate picture_type while turning off PIC TYPE DECODE

For V4L2_CID_MPEG_VIDC_VIDEO_PICTYPE_DEC_MODE ioctl the valid
ctrl values are V4L2_MPEG_VIDC_VIDEO_PICTYPE_DECODE_ON and
V4L2_MPEG_VIDC_VIDEO_PICTYPE_DECODE_OFF. But for
V4L2_MPEG_VIDC_VIDEO_PICTYPE_DECODE_OFF case
we are sending wrong enable_picture.picture_type value. We are
also oring HAL_PICTURE_IDR, whereas only
HAL_PICTURE_I | HAL_PICTURE_P | HAL_PICTURE_B should be sent.

Change-Id: I96103d068b3e6e5f23da07d9a4c20e92ed55557c
Signed-off-by: Praveen Kumar Dwivedi <pkd@codeaurora.org>