efi_loader: export efi_install_multiple_protocol_interfaces

Export function efi_install_multiple_protocol_interfaces() so that we can
call it in others parts of the UEFI subsystem.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
diff --git a/lib/efi_loader/efi_boottime.c b/lib/efi_loader/efi_boottime.c
index 31d11b8..abc295e 100644
--- a/lib/efi_loader/efi_boottime.c
+++ b/lib/efi_loader/efi_boottime.c
@@ -2267,7 +2267,7 @@
  *
  * Return: status code
  */
-static efi_status_t EFIAPI efi_install_multiple_protocol_interfaces
+efi_status_t EFIAPI efi_install_multiple_protocol_interfaces
 				(efi_handle_t *handle, ...)
 {
 	EFI_ENTRY("%p", handle);