malloc: Fix memalign not honoring alignment prior to full malloc init

When using memalign() in a scenario where U-Boot is configured for full
malloc support with simple malloc not explicitly enabled and before the
full malloc support is initialized, a memory block is being allocated
and returned without the alignment parameter getting honored.

Fix this issue by replacing the existing memalign pre-full malloc init
logic with a call to memalign_simple() this way ensuring proper alignment
of the returned memory block.

Fixes: ee038c58d5 ("malloc: Use malloc simple before malloc is fully initialized in memalign()")
Signed-off-by: Andreas Dannenberg <dannenberg@ti.com>
Reviewed-by: Lokesh Vutla <lokeshvutla@ti.com>

common/dlmalloc.c

@@ -1893,8 +1893,7 @@ Void_t* mEMALIGn(alignment, bytes) size_t alignment; size_t bytes;
 
 #if CONFIG_VAL(SYS_MALLOC_F_LEN)
 	if (!(gd->flags & GD_FLG_FULL_MALLOC_INIT)) {
-		nb = roundup(bytes, alignment);
-		return malloc_simple(nb);
+		return memalign_simple(alignment, bytes);
 	}
 #endif