imx6: rename target to 'imx'

This is first step in migrating to a generic i.MX target which in the
next steps will also get divided into arch-specific subtargets.

In the result, this will make it possible to support, within a single
target, also other modern NXP i.MX families, like the i.MX 7, i.MX 8
or recently introduced i.MX 9.

Signed-off-by: Piotr Dymacz <pepe2k@gmail.com>

target/linux/imx/base-files/lib/imx.sh

@@ -0,0 +1,30 @@
+#
+# Copyright (C) 2010-2013 OpenWrt.org
+#
+
+rootpartuuid() {
+	local cmdline=$(cat /proc/cmdline)
+	local bootpart=${cmdline##*root=}
+	bootpart=${bootpart%% *}
+	local uuid=${bootpart#PARTUUID=}
+	echo ${uuid%-02}
+}
+
+bootdev_from_uuid() {
+	blkid | grep "PTUUID=\"$(rootpartuuid)\"" | cut -d : -f1
+}
+
+bootpart_from_uuid() {
+	blkid | grep $(rootpartuuid)-01 | cut -d : -f1
+}
+
+rootpart_from_uuid() {
+	blkid | grep $(rootpartuuid)-02 | cut -d : -f1
+}
+
+apalis_mount_boot() {
+	mkdir -p /boot
+	[ -f /boot/uImage ] || {
+		mount -o rw,noatime $(bootpart_from_uuid) /boot > /dev/null
+	}
+}