SOC1-223: Update enviroment variable names

README.md

env/dependency_env.sh

flist/dma-230/pl230_ip.flist

flist/generic_lib/generic_lib_ip.flist

flist/nanosoc/nanosoc_chip_ip.flist

flist/nanosoc/nanosoc_matrix_ip.flist

flist/nanosoc/nanosoc_tb.flist

flist/nanosoc/nanosoc_test_io_ip.flist

flist/primitives/primitives.flist

flist/project/system.flist

flist/project/wrapper.flist

flist/wrapper/wrapper_ip.flist

flow/stimgen.py

nanosoc_tech

set_env.sh

simulate/socsim/bootrom.sh

simulate/socsim/system_secworks_sha256.sh

simulate/socsim/wrapper_secworks_sha256.sh

soctools_flow