layers/meta-balena-fsl-arm/conf/layer.conf: Compress kernel for nitro…

…gen8mm

We need to make more space in the rootfs for this machine.

Signed-off-by: Florin Sarbu <florin@balena.io>

layers/meta-balena-fsl-arm/conf/layer.conf

@@ -46,3 +46,6 @@ FULL_OPTIMIZATION = "-Os -pipe ${DEBUG_FLAGS}"
 
 # Temporarily removed until the solidrun upstream repo adds honister support: https://github.com/SolidRun/meta-solidrun-solidsense/issues/2
 BBMASK += "meta-balena-fsl-arm/recipes-bsp/u-boot/u-boot-solidsense-imx6_%.bbappend"
+
+# this board is very low on rootfs space so we need to compress the kernel in order to save space
+KERNEL_IMAGETYPE:nitrogen8mm = "Image.gz"