cmd: efidebug: simplify printing GUIDs

Use "%pS" to print text representations of GUIDs.

Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
diff --git a/include/efi_api.h b/include/efi_api.h
index ec9fa89..a60d1bc 100644
--- a/include/efi_api.h
+++ b/include/efi_api.h
@@ -426,6 +426,14 @@
 	EFI_GUID(0x1e2ed096, 0x30e2, 0x4254, 0xbd, \
 		 0x89, 0x86, 0x3b, 0xbe, 0xf8, 0x23, 0x25)
 
+#define EFI_RNG_PROTOCOL_GUID \
+	EFI_GUID(0x3152bca5, 0xeade, 0x433d, 0x86, 0x2e, \
+		 0xc0, 0x1c, 0xdc, 0x29, 0x1f, 0x44)
+
+#define EFI_DT_FIXUP_PROTOCOL_GUID \
+	EFI_GUID(0xe617d64c, 0xfe08, 0x46da, 0xf4, 0xdc, \
+		 0xbb, 0xd5, 0x87, 0x0c, 0x73, 0x00)
+
 /**
  * struct efi_configuration_table - EFI Configuration Table
  *