init-install*: only pick root mmc devices

Some eMMC devices show special sub-devices such as mmcblk0boot0
etc. The installation script currently pick all of them up and
displays it to the user which makes some confusions because these
sub-devices are pretty small and complete installation including
rootfs won't be possible in most cases.
We simply now drop these sub-devices and only present the user
with the root of such mmc devices.

(From OE-Core rev: 4b4d80306de8d8a2e3a2d784890f34e4a0ecfcf0)

Signed-off-by: Awais Belal <awais_belal@mentor.com>
Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-core/initrdscripts/files/init-install-efi.sh

@@ -29,7 +29,13 @@ esac
 
 echo "Searching for hard drives ..."
 
-for device in `ls /sys/block/`; do
+# Some eMMC devices have special sub devices such as mmcblk0boot0 etc
+# we're currently only interested in the root device so pick them wisely
+devices=`ls /sys/block/ | grep -v mmcblk`
+mmc_devices=`ls /sys/block/ | grep "mmcblk[0-9]\{1,\}$"`
+devices="$devices $mmc_devices"
+
+for device in $devices; do
     case $device in
         loop*)
             # skip loop device

meta/recipes-core/initrdscripts/files/init-install.sh

@@ -28,7 +28,13 @@ esac
 
 echo "Searching for hard drives ..."
 
-for device in `ls /sys/block/`; do
+# Some eMMC devices have special sub devices such as mmcblk0boot0 etc
+# we're currently only interested in the root device so pick them wisely
+devices=`ls /sys/block/ | grep -v mmcblk`
+mmc_devices=`ls /sys/block/ | grep "mmcblk[0-9]\{1,\}$"`
+devices="$devices $mmc_devices"
+
+for device in $devices; do
     case $device in
         loop*)
             # skip loop device