x86, efi: fix comment typo in head_32.S

Signed-off-by: Olaf Hering <olaf@aepfle.de>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>

arch/x86/boot/compressed/head_32.S

@@ -38,7 +38,7 @@ ENTRY(startup_32)
 	.balign	0x10
 	/*
 	 * We don't need the return address, so set up the stack so
-	 * efi_main() can find its arugments.
+	 * efi_main() can find its arguments.
 	 */
 	add	$0x4, %esp