libimxvpuapi: bump to version 0.10.3

libimxvpuapi: bump to version 0.10.3

Because with libimxvpuapi older than 0.10.3, the gst1-imx-0.12.3 "imxvpu"
plugin will not build.

Changelog:
* properly pass on color format in simplified JPEG encoder interface
* add alternative write-callback-style encoding mode
  also add encode example variant which uses write-callback style output
* add support for "fake grayscale mode" in encoders
  this is done by using I420 internally and filling the U and V planes
  with 0x80 bytes
* make sure JPEG quantization table is copied in standardized zig zag order
  the VPU does not, so this has to be done explicitely

Signed-off-by: Danomi Manchego <danomimanchego123@gmail.com>
Reviewed-by: Gary Bisson <gary.bisson@boundarydevices.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>