rpidistro-ffmpeg: remove --enable-v4l2-request flag

When building with latest OE-Core master. Running into
bellow issue. After further research issue appears to
be similar to

bootlin/libva-v4l2-request#35

| src/libavcodec/hevc-ctrls-v2.h:59:8: error: redefinition of 'struct
v4l2_ctrl_hevc_sps'
|    59 | struct v4l2_ctrl_hevc_sps {
|       |        ^~~~~~~~~~~~~~~~~~
| In file included from
/../../../recipe-sysroot/usr/include/linux/videodev2.h:65,
|                  from src/libavcodec/hevc-ctrls-v2.h:14:

Disable ffmpeg libva-v4l2-request so that master builds
and until better investigation can be done to fix
issue.

Signed-off-by: Vincent Davis Jr <[email protected]>

recipes-multimedia/rpidistro-ffmpeg/rpidistro-ffmpeg_4.3.4.bb

@@ -98,7 +98,7 @@ PACKAGECONFIG[snappy] = "--enable-libsnappy,--disable-libsnappy,snappy"
 PACKAGECONFIG[udev] = "--enable-libudev,--disable-libudev,udev"
 PACKAGECONFIG[drm] = "--enable-libdrm,--disable-libdrm,libdrm"
 PACKAGECONFIG[epoxy] = "--enable-epoxy,--disable-epoxy,libepoxy"
-PACKAGECONFIG[v4l2] = "--enable-libv4l2 --enable-v4l2-m2m --enable-v4l2-request,,v4l-utils"
+PACKAGECONFIG[v4l2] = "--enable-libv4l2 --enable-v4l2-m2m,,v4l-utils"
 PACKAGECONFIG[mmal] = "--enable-omx --enable-omx-rpi --enable-mmal,,userland"
 PACKAGECONFIG[sand] = "--enable-sand,,"
 PACKAGECONFIG[rpi] = "--enable-rpi,,"