Use bash for the shell

- soc.mak uses some bashisms, such as source. Set the SHELL variable to
/bin/bash to force using bash.

Change-Id: If79a04fd5d3080003505805dbcffef584406f88b
1 file changed
tree: 79ebc09bf4e07d373c287696b76c91f2a843e944
  1. Makefile
  2. iMX8M/