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/lib/efi_loader/efi_runtime.c b/lib/efi_loader/efi_runtime.c
index 9e28172..0888316 100644
--- a/lib/efi_loader/efi_runtime.c
+++ b/lib/efi_loader/efi_runtime.c
@@ -91,6 +91,7 @@
 	switch (reset_type) {
 	case EFI_RESET_COLD:
 	case EFI_RESET_WARM:
+	case EFI_RESET_PLATFORM_SPECIFIC:
 		do_reset(NULL, 0, 0, NULL);
 		break;
 	case EFI_RESET_SHUTDOWN: