Update the files which contain no license information with the
'Apache-2.0' SPDX license identifier. Many source files in the tree are
missing licensing information, which makes it harder for compliance
tools to determine the correct license.
By default all files without license information are under the default
license of Zephyr, which is Apache version 2.
Signed-off-by: Anas Nashif <anas.nashif@intel.com>
two configs are contained in this board
* nsim_em: em with arc MPUv2
* nsim_sem: em with arc SecureShield and MPUv3
Signed-off-by: Wayne Ren <wei.ren@synopsys.com>