openbmc: Lift mkfs opts to variables and use OVERRIDES capability

Moves the ext4-specific mkfs options out to configuration variables.
OVERLAY_MKFS_OPTS can be overridden using the usual bitbake OVERRIDES
mechanism, where the override postfix is 'rwfs-${OVERLAY_BASETYPE}',
e.g. rwfs-ext4.

Signed-off-by: Andrew Jeffery <andrew@aj.id.au>
1 file changed
tree: 819ddb1d7d02bb8e13e6020e96d33a02a6ed06cf
  1. classes/
  2. common/
  3. conf/
  4. COPYING.apache-2.0
  5. COPYING.MIT
  6. LICENSE