TS: Update service name in the provider

The newer version of trusted services repo also includes the
encoding scheme in the service name to locate the service.

Signed-off-by: Gowtham Suresh Kumar <[email protected]>

Author: gowthamsk-arm

src/providers/trusted_service/context/mod.rs

@@ -76,7 +76,7 @@ impl Context {
 
         info!("Obtaining a crypto Trusted Service context.");
         let mut status = 0;
-        let service_name = CString::new("sn:trustedfirmware.org:crypto:0").unwrap();
+        let service_name = CString::new("sn:trustedfirmware.org:crypto-protobuf:0").unwrap();
         let service_context = unsafe { service_locator_query(service_name.as_ptr(), &mut status) };
         if service_context.is_null() {
             error!("Locating crypto Trusted Service failed, status: {}", status);