aspeed: move MTD partition rules

Move the MTD partition rules to their own recipe under
udev rather than appending u-boot-fw-utils.  Additionally
the rules are an artifact of the aspeed u-boot-fw-utils
configuration, so place the new recipe in the aspeed layer.

Tested: Built a witherspoon image
Change-Id: I1fec995dd75543b2630db29d78bfb29a1a5949d5
Signed-off-by: Brad Bishop <bradleyb@fuzziesquirrel.com>
diff --git a/common/recipes-bsp/u-boot/files/76-mtd-partitions.rules b/common/recipes-bsp/u-boot/files/76-mtd-partitions.rules
deleted file mode 100644
index 28e4586..0000000
--- a/common/recipes-bsp/u-boot/files/76-mtd-partitions.rules
+++ /dev/null
@@ -1 +0,0 @@
-ENV{DEVTYPE}=="mtd", SYMLINK+="mtd/%s{name}"
diff --git a/common/recipes-bsp/u-boot/u-boot-fw-utils_%.bbappend b/common/recipes-bsp/u-boot/u-boot-fw-utils_%.bbappend
deleted file mode 100644
index 03b1a76..0000000
--- a/common/recipes-bsp/u-boot/u-boot-fw-utils_%.bbappend
+++ /dev/null
@@ -1,7 +0,0 @@
-FILESEXTRAPATHS_prepend := "${THISDIR}/files:"
-SRC_URI_append = " file://76-mtd-partitions.rules"
-
-do_install_append() {
-	install -d ${D}/${base_libdir}/udev/rules.d/
-	install ${WORKDIR}/76-mtd-partitions.rules ${D}/${base_libdir}/udev/rules.d/
-}