spl: Adjust debugging and xPL symbols

The size of some malloc() fields has reduced on 64-bit machines, but
the spl_reloc code was not updated. Fix this to avoid a compiler
warning.

Also update for the new xPL naming.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Tom Rini <trini@konsulko.com>
diff --git a/common/spl/spl_reloc.c b/common/spl/spl_reloc.c
index be8349b..324b98e 100644
--- a/common/spl/spl_reloc.c
+++ b/common/spl/spl_reloc.c
@@ -154,7 +154,7 @@
 	rcode_func loader;
 	int ret;
 
-	log_debug("malloc usage %lx bytes (%ld KB of %d KB)\n", gd->malloc_ptr,
+	log_debug("malloc usage %x bytes (%d KB of %d KB)\n", gd->malloc_ptr,
 		  gd->malloc_ptr / 1024, CONFIG_VAL(SYS_MALLOC_F_LEN) / 1024);
 
 	if (*image->stack_prot != STACK_PROT_VALUE) {