build: support multiple defconfigs per board

We will now look for the defconfig to be used using wildcards which will
allow us to host similar boards in the same directory and share all existing
files.

JIRA: ZEP-103

Change-Id: Icfe5dc2fa4b2c4e21e6b1285d80e0c844d430d7d
Signed-off-by: Anas Nashif <anas.nashif@intel.com>
1 file changed