The current GPL only licensing on the device trees makes it very
impractical for other software components licensed under another
license.
To make it easier to reuse them, re-license the the device trees for
Freescale (now NXP) SoCs and boards under GPLv2+/X11 dual license.
Same trend is followed in linux.
Cc: Priyanka Jain
Cc: Mingkai Hu
Cc: York Sun
Signed-off-by: Pankaj Bansal
Reviewed-by: York Sun