[BUG] ffmpeg 6.0.1 build (Allwinner H5) warnings

[heitbaum]

cc1: warning: switch '-mcpu=cortex-a53' conflicts with '-march=armv8-a+crc+crypto' switch and resulted in options '+crc+crypto' being added

[Kwiboo]

In my local copy testing ffmpeg 7.x and updated v4l2request patches I have used following, may fix these warnings:

diff --git a/packages/multimedia/ffmpeg/package.mk b/packages/multimedia/ffmpeg/package.mk
index 11129c638e..b76a8229c3 100644
--- a/packages/multimedia/ffmpeg/package.mk
+++ b/packages/multimedia/ffmpeg/package.mk
@@ -133,7 +133,7 @@ fi
 
 configure_target() {
   ./configure --prefix="/usr" \
-              --cpu="${TARGET_CPU}" \
+              --cpu="${TARGET_CPU}${TARGET_CPU_FLAGS}" \
               --arch="${TARGET_ARCH}" \
               --enable-cross-compile \
               --cross-prefix="${TARGET_PREFIX}" \