sm8250-common: udfps: Allow access fod_status node in /sys/touchpanel

* fts_521 and goodix_driver_gt9886 used in umi exposes fod_status sysfs node
  in /sys/touchpanel

Signed-off-by: Ivan Vecera <ivan@cera.cz>
Change-Id: I9707e1837c41b0cbc3f03180774af1b53c4b2f6d

rootdir/etc/init.xiaomi.rc

@@ -12,6 +12,9 @@ on init
     chmod 0666 /dev/goodix_fp
     chown system system /dev/goodix_fp
 
+    chown system system /sys/touchpanel/fod_status
+    chmod 0644 /sys/touchpanel/fod_status
+
 on boot
     chown system system /sys/bus/platform/devices/soc:fingerprint_fpc/irq
     chown system system /sys/bus/platform/devices/soc:fingerprint_fpc/irq_enable

sepolicy/vendor/hal_fingerprint_default.te

@@ -16,12 +16,14 @@ allow hal_fingerprint_default {
   input_device
   vendor_sysfs_graphics
   sysfs_msm_subsys
+  sysfs_touchpanel
 }: dir r_dir_perms;
 
 allow hal_fingerprint_default {
   vendor_sysfs_fingerprint
   vendor_sysfs_graphics
   sysfs_msm_subsys
+  sysfs_touchpanel
 }: file rw_file_perms;
 
 r_dir_file(hal_fingerprint_default, firmware_file)

udfps/UdfpsHandler.cpp

@@ -24,6 +24,7 @@ static const char* kFodUiPaths[] = {
 };
 
 static const char* kFodStatusPaths[] = {
+        "/sys/touchpanel/fod_status",
 };
 
 static bool readBool(int fd) {