[media] uvcvideo: Fix data type for pan/tilt control
The pan/tilt absolute control value is signed value. If minimum value is minus, It will be changed to plus by clamp_t() as commit 64ae9958. ([media] uvcvideo: Fix control value clamping for unsigned integer controls). It leads to wrong setting of the control values. For example, when min and max are -36000 and 36000, the setting value between of this range is always 36000. So, its data type should be changed to signed. Signed-off-by: NChanho Min <chanho.min@lge.com> Signed-off-by: NLaurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: NMauro Carvalho Chehab <m.chehab@samsung.com>
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