fix(stm32mp1): correct types in messages

Avoid warnings when -Wformat-signedness is enabled.

Signed-off-by: Yann Gautier <yann.gautier@st.com>
Change-Id: I0ca41cb96826b4f7f9bcf77909fad110325c1e91
diff --git a/plat/st/stm32mp1/stm32mp1_boot_device.c b/plat/st/stm32mp1/stm32mp1_boot_device.c
index 27dbf4e..b05de1c 100644
--- a/plat/st/stm32mp1/stm32mp1_boot_device.c
+++ b/plat/st/stm32mp1/stm32mp1_boot_device.c
@@ -115,8 +115,8 @@
 		}
 	}
 
-	VERBOSE("OTP: Block %i Page %i Size %lli\n", nand_dev->block_size,
-	     nand_dev->page_size, nand_dev->size);
+	VERBOSE("OTP: Block %u Page %u Size %llu\n", nand_dev->block_size,
+		nand_dev->page_size, nand_dev->size);
 
 	return 0;
 }