Add vendor prefix to slpi property

For devices launching with Android Q or later, properties defined by
vendor should have the prefix "vendor."

Bug: 138278883
Test: m
Change-Id: I03d58f7fb5d6e64057209fad78c5d181dc91c0f0
diff --git a/vendor/qcom/common/init-devstart-sh.te b/vendor/qcom/common/init-devstart-sh.te
index 87ec1fc..65f353f 100644
--- a/vendor/qcom/common/init-devstart-sh.te
+++ b/vendor/qcom/common/init-devstart-sh.te
@@ -11,7 +11,7 @@
 
 # Set the vendor.qcom.devup property
 set_prop(init-qcom-devstart-sh, vendor_device_prop)
-# Set the sys.slpi.firmware.version property.
+# Set the vendor.sys.slpi.firmware.version property.
 set_prop(init-qcom-devstart-sh, public_vendor_system_prop)
 
 # Set boot_adsp and boot_slpi to 1
diff --git a/vendor/qcom/common/property_contexts b/vendor/qcom/common/property_contexts
index beca35d..112cbbd 100644
--- a/vendor/qcom/common/property_contexts
+++ b/vendor/qcom/common/property_contexts
@@ -40,7 +40,7 @@
 vendor.ese.                u:object_r:vendor_secure_element_prop:s0
 vendor.qcom.devup          u:object_r:vendor_device_prop:s0
 vendor.all.modules.ready   u:object_r:vendor_device_prop:s0
-sys.slpi.firmware.version  u:object_r:public_vendor_system_prop:s0
+vendor.sys.slpi.firmware.version  u:object_r:public_vendor_system_prop:s0
 ctl.vendor.imsrcsservice   u:object_r:ctl_vendor_imsrcsservice_prop:s0
 persist.vendor.usb.config  u:object_r:vendor_usb_config_prop:s0
 vendor.usb.config          u:object_r:vendor_usb_config_prop:s0