onclite: sepolicy: Label extcon nodes

Change-Id: Id068d6f9757c8114ed45543ddd7c3990d02f4ee1

sepolicy/vendor/genfs_contexts

 # Boot reason
 genfscon proc  /sys/kernel/boot_reason   u:object_r:proc_boot_reason:s0
 
+# Extcon
+genfscon sysfs /devices/platform/soc/200f000.qcom,spmi/spmi-0/spmi0-02/200f000.qcom,spmi:qcom,pmi632@2:qcom,qpnp-smb5/extcon           u:object_r:sysfs_extcon:s0
+genfscon sysfs /devices/platform/soc/soc:qcom,mdss_wb_panel/extcon                                                                     u:object_r:sysfs_extcon:s0
+
 # Rmt
 genfscon debugfs /rmt_storage	u:object_r:debugfs_rmt:s0