efi_loader: consistently use efi_uintn_t in boot services

Consistenly use efi_uintn_t wherever the UEFI spec uses
UINTN in boot services interfaces.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Alexander Graf <agraf@suse.de>
diff --git a/lib/efi_selftest/efi_selftest.c b/lib/efi_selftest/efi_selftest.c
index b6bc4dd..263b53f 100644
--- a/lib/efi_selftest/efi_selftest.c
+++ b/lib/efi_selftest/efi_selftest.c
@@ -32,9 +32,9 @@
  */
 void efi_st_exit_boot_services(void)
 {
-	unsigned long map_size = 0;
-	unsigned long map_key;
-	unsigned long desc_size;
+	efi_uintn_t map_size = 0;
+	efi_uintn_t map_key;
+	efi_uintn_t desc_size;
 	u32 desc_version;
 	efi_status_t ret;
 	struct efi_mem_desc *memory_map;