Added intra_idr_period for H264 encode
Added intra_idr_period for H264 encode

Signed-off-by: Austin Yuan <f447c34e4ebcef84a81b40a8d4dbc448a14e5570@gmail.com>

CyanogenMod/android_hardware_intel_libva,01org/libva-cros,01org/iotg-lin-gfx-libva,01org/libva-cros,chenxianqin/vaapi-libva,gbeauchesne/libva,Distrotech/libva,CyanogenMod/android_hardware_intel_libva,01org/iotg-lin-gfx-libva,CyanogenMod/android_hardware_intel_libva,android-ia/hardware_intel_libva,android-ia/hardware_intel_libva,01org/iotg-lin-gfx-libva,halleyzhao/libva-fdo,01org/libva-cros,gbeauchesne/libva,Distrotech/libva,chenxianqin/vaapi-libva,pma1/libva,chenxianqin/vaapi-libva,halleyzhao/libva-fdo,android-ia/hardware_intel_libva,gbeauchesne/libva,zzhhui/libva,pma1/libva,zzhhui/libva,pma1/libva,halleyzhao/libva-fdo,zzhhui/libva,Distrotech/libva