Use += operator to prevent resetting the value of the EXTRA_IMAGEDEPENDS
variable. That is how it's mostly used elsewhere.
Signed-off-by: Javier Viguera <javier.viguera@digi.com>
* fix arch tune files path in machine config
* update imx-digi-base config file (using as a base the imx-base.inc
config file in 'meta-freescale')
Signed-off-by: Javier Viguera <javier.viguera@digi.com>