Sync ffmpeg-libfdk_aac with regular ffmpeg package to use libmfx

ffmpeg/libfdk_aac/PKGBUILD

@@ -25,7 +25,6 @@ depends=(
   gmp
   gnutls
   gsm
-  intel-media-sdk
   jack
   lame
   libass.so
@@ -35,6 +34,7 @@ depends=(
   libdrm
   libfreetype.so
   libiec61883
+  libmfx
   libmodplug
   libomxil-bellagio
   libpulse
@@ -76,7 +76,10 @@ makedepends=(
   ladspa
   nasm
 )
-optdepends=('ladspa: LADSPA filters')
+optdepends=(
+  'intel-media-sdk: Intel QuickSync support'
+  'ladspa: LADSPA filters'
+)
 provides=(
   libavcodec.so
   libavdevice.so
@@ -107,8 +110,6 @@ prepare() {
 build() {
   cd $_name
 
-  export PKG_CONFIG_PATH=/opt/intel/mediasdk/lib/pkgconfig
-
   ./configure \
     --prefix=/usr \
     --disable-debug \