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>

include/malloc.h

@@ -878,7 +878,6 @@ extern Void_t*     sbrk();
 #define memalign memalign_simple
 static inline void free(void *ptr) {}
 void *calloc(size_t nmemb, size_t size);
-void *memalign_simple(size_t alignment, size_t bytes);
 void *realloc_simple(void *ptr, size_t size);
 void malloc_simple_info(void);
 #else
@@ -914,6 +913,7 @@ int initf_malloc(void);
 
 /* Simple versions which can be used when space is tight */
 void *malloc_simple(size_t size);
+void *memalign_simple(size_t alignment, size_t bytes);
 
 #pragma GCC visibility push(hidden)
 # if __STD_C