firmware-imx: fix EULA and COPYING hashes

NXP updated their EULA text to 2018.
Also add QCA text for their WiFi module firmware files.

Fixes:
http://autobuild.buildroot.net/results/144c3ac1902be605ca221e5685b13ba22db9a70e/
http://autobuild.buildroot.net/results/c8f787cc5309a9d216fb74b13e700e520facef64/



Signed-off-by: Gary Bisson <gary.bisson@boundarydevices.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>