meta-phosphor: remove exe perms from udev rules

Remove execute permssions from udev rules to avoid errors like:

systemd-udevd[110]: Configuration file /lib/udev/rules.d/70-iio.rules is
marked executable. Please remove executable permission bits. Proceeding
anyway.

(From meta-phosphor rev: d0c97c05b3c9b0d4b73978894b87cf649944bb37)

Change-Id: Ie2908b5b0734e79cf4d0287d1fe7262022d5d740
Signed-off-by: Brad Bishop <bradleyb@fuzziesquirrel.com>
diff --git a/meta-phosphor/recipes-phosphor/sensors/phosphor-hwmon_git.bb b/meta-phosphor/recipes-phosphor/sensors/phosphor-hwmon_git.bb
index 4e059bd..3207df4 100644
--- a/meta-phosphor/recipes-phosphor/sensors/phosphor-hwmon_git.bb
+++ b/meta-phosphor/recipes-phosphor/sensors/phosphor-hwmon_git.bb
@@ -46,8 +46,8 @@
 do_install_append() {
 
         install -d ${D}/${base_libdir}/udev/rules.d/
-        install ${WORKDIR}/70-hwmon.rules ${D}/${base_libdir}/udev/rules.d/
-        install ${WORKDIR}/70-iio.rules ${D}/${base_libdir}/udev/rules.d/
+        install -m 0644 ${WORKDIR}/70-hwmon.rules ${D}/${base_libdir}/udev/rules.d/
+        install -m 0644 ${WORKDIR}/70-iio.rules ${D}/${base_libdir}/udev/rules.d/
 
         install -d ${D}${bindir}
         install -m 0755 ${WORKDIR}/start_hwmon.sh ${D}${bindir}