uefi-services: Change panic handler log message.

The panic handler now displays its log message using `println!` instead
of `error!`. The message prefix is altered from [ERROR] to [PANIC].
The extraneous filename and line number printed by `error!` are also
removed from the log message.

Author: raccog

CHANGELOG.md

@@ -90,6 +90,9 @@
 
 - The `no_panic_handler` feature has been replaced with an additive
   `panic_handler` feature. The new feature is enabled by default.
+- Changed the panic handler log message to use `println!` instead of
+  `error!`. This removes an extraneous file name and line number from
+  the log message.
 
 ## uefi - 0.16.1
 

uefi-services/src/lib.rs

@@ -181,7 +181,7 @@ unsafe extern "efiapi" fn exit_boot_services(_e: Event, _ctx: Option<NonNull<c_v
 #[cfg(feature = "panic_handler")]
 #[panic_handler]
 fn panic_handler(info: &core::panic::PanicInfo) -> ! {
-    error!("{}", info);
+    println!("[PANIC]: {}", info);
 
     // Give the user some time to read the message
     if let Some(st) = unsafe { SYSTEM_TABLE.as_ref() } {