meta-freescale-distro: add necessary dependent layers for meta-freesc…

…ale-distro

When parsing yocto project with command "bitbake -p", there is below
error reported:
layers/meta-freescale-distro/conf/distro/include/fslc-base.inc:1:
Could not include required file conf/distro/poky.conf
Because the necessary dependent layers of meta-freescale-distro
are not downloaded when setting up project, add them to avoid building
issue.

Signed-off-by: Meng Li <Meng.Li@windriver.com>

conf/layer.conf

@@ -9,4 +9,6 @@ BBFILE_COLLECTIONS += "freescale-distro"
 BBFILE_PATTERN_freescale-distro := "^${LAYERDIR}/"
 BBFILE_PRIORITY_freescale-distro = "4"
 
+LAYERDEPENDS_freescale-distro = "core yocto"
+
 LAYERSERIES_COMPAT_freescale-distro = "langdale mickledore"