configs/atmel_sama5d4_xplained_mmc_dev: increase ext4 image size
The default of 60 MB is no longer sufficient to contain all the tools
enabled in this "development" defconfig, so let's increase the ext4
image size to 120 MB.
Fixes:
https://gitlab.com/buildroot.org/buildroot/-/jobs/199339426
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
(cherry picked from commit 18a4d559061ab3d00f7e39c963d86ee5ff794d4c)
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>