Add qcom_diag group for relevant processes, set sdio permissions

Access to Diag requires processes to be part of a new "qcom_diag" group.
Adding QMUXD, QMI Proxy to be part of this new group to be able
to log messages to Diag.

Change-Id: I9eb08ac8f44590656c0bd8f0e8ce648e9e406deb

rootdir/etc/init.qcom.rc

@@ -276,7 +276,7 @@ service bt-sap /system/bin/sapd 15
 service bridgemgrd /system/bin/bridgemgrd
     class late_start
     user radio
-    group radio
+    group radio qcom_diag
     disabled
 
 service port-bridge /system/bin/port-bridge /dev/smd0 /dev/ttyGS0
@@ -288,14 +288,14 @@ service port-bridge /system/bin/port-bridge /dev/smd0 /dev/ttyGS0
 service qmiproxy /system/bin/qmiproxy
     class main
     user radio
-    group radio
+    group radio qcom_diag
     disabled
 
 # QMUX must be in multiple groups to support external process connections
 service qmuxd /system/bin/qmuxd
     class main
     user radio
-    group radio audio bluetooth gps
+    group radio audio bluetooth gps qcom_diag
     disabled
 
 service netmgrd /system/bin/netmgrd

rootdir/etc/ueventd.qcom.rc

@@ -25,6 +25,9 @@
 # ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #
 
+# the DIAG device node is not world writable/readable.
+/dev/diag                 0660   system     qcom_diag
+
 /dev/genlock              0666   system     system
 /dev/kgsl                 0666   system     system
 /dev/kgsl-3d0             0666   system     system
@@ -42,6 +45,15 @@
 /dev/smdcntl6             0640   radio      radio
 /dev/smdcntl7             0640   radio      radio
 /dev/smuxctl32            0640   radio      radio
+/dev/sdioctl0             0640   radio      radio
+/dev/sdioctl1             0640   radio      radio
+/dev/sdioctl2             0640   radio      radio
+/dev/sdioctl3             0640   radio      radio
+/dev/sdioctl4             0640   radio      radio
+/dev/sdioctl5             0640   radio      radio
+/dev/sdioctl6             0640   radio      radio
+/dev/sdioctl7             0640   radio      radio
+/dev/sdioctl8             0640   radio      radio
 /dev/rmnet_mux_ctrl       0640   radio      radio
 /dev/hsicctl0             0640   radio      radio
 /dev/hsicctl1             0640   radio      radio