Remove more CTP6 backend stuff - this has to be done using the petalinux SDK
Merge branch 'master' of github.com:uwcms/rct-upgrade-microblaze

Conflicts:
	ctp6_be_spi_echo_test.old/.cproject
	ctp6_be_spi_echo_test.old/.project
	ctp6_be_spi_echo_test.old/src/lscript.ld
	ctp6_be_spi_echo_test.old/src/platform.c
	ctp6_be_spi_echo_test.old/src/platform.h
	ctp6_be_spi_echo_test.old/src/platform_config.h