efi_loader: add missing EFI_RESET_PLATFORM_SPECIFIC

EFI_RESET_PLATFORM_SPECIFIC is one of the values that can be used for the
EFI service ResetSystem. The missing definition is added. The value has to
handled in efi_reset_system().

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Alexander Graf <agraf@suse.de>
diff --git a/include/efi_api.h b/include/efi_api.h
index 167c44e..28de93a 100644
--- a/include/efi_api.h
+++ b/include/efi_api.h
@@ -180,7 +180,8 @@
 enum efi_reset_type {
 	EFI_RESET_COLD = 0,
 	EFI_RESET_WARM = 1,
-	EFI_RESET_SHUTDOWN = 2
+	EFI_RESET_SHUTDOWN = 2,
+	EFI_RESET_PLATFORM_SPECIFIC = 3,
 };
 
 /* EFI Runtime Services table */