For UVC webcam;-
opkg update
opkg install kmod-usb-core kmod-video-core kmod-input-core kmod-video-uvc
opkg remove kmod-video-gspca-ov534 kmod-video-gspca-core
For gspca-ov534 webcam;-
opkg update
opkg install kmod-usb-core kmod-video-core kmod-input-core kmod-video-gspca-ov534 kmod-video-gspca-core
opkg remove kmod-video-uvc
some time reboot is needed.
find out old trust webcam is UVC webcam or not;-
lsusb -d 093a:2468 -v | grep "14 Video"
bFunctionClass 14 Video
bInterfaceClass 14 Video
bInterfaceClass 14 Video
bInterfaceClass 14 Video
In this case the Linux UVC driver should recognize your camera when you plug it in.