stm32mp: dram_init: Fix AARCH64 compilation warnings

When building with AARCH64 defconfig, we got warnings for debug
message
- format '%x' expects argument of type 'unsigned int',
   but argument 3 has type 'size_t' {aka 'long unsigned int'}).
- format '%lx' expects argument of type 'long unsigned int',
  but argument 2 has type 'phys_addr_t' {aka 'long long unsigned
  int'}

Signed-off-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
Signed-off-by: Patrice Chotard <patrice.chotard@foss.st.com>
Reviewed-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
diff --git a/arch/arm/mach-stm32mp/dram_init.c b/arch/arm/mach-stm32mp/dram_init.c
index a1e77a4..cb35ed6 100644
--- a/arch/arm/mach-stm32mp/dram_init.c
+++ b/arch/arm/mach-stm32mp/dram_init.c
@@ -36,7 +36,7 @@
 		log_debug("Cannot get RAM size: %d\n", ret);
 		return ret;
 	}
-	log_debug("RAM init base=%lx, size=%x\n", ram.base, ram.size);
+	log_debug("RAM init base=%p, size=%zx\n", (void *)ram.base, ram.size);
 
 	gd->ram_size = ram.size;