board_init.c: Always use memset()

We can make the code read more easily here by simply using memset()
always as when we don't have an optimized version of the function we
will still have a version of this function around anyhow.

Cc: Simon Glass <sjg@chromium.org>
Signed-off-by: Tom Rini <trini@konsulko.com>
Reviewed-by: Simon Glass <sjg@chromium.org>

common/init/board_init.c

@@ -11,16 +11,6 @@
 
 DECLARE_GLOBAL_DATA_PTR;
 
-/*
- * It isn't trivial to figure out whether memcpy() exists. The arch-specific
- * memcpy() is not normally available in SPL due to code size.
- */
-#if !defined(CONFIG_SPL_BUILD) || \
-		(defined(CONFIG_SPL_LIBGENERIC_SUPPORT) && \
-		!defined(CONFIG_SPL_USE_ARCH_MEMCPY))
-#define _USE_MEMCPY
-#endif
-
 /* Unfortunately x86 or ARM can't compile this code as gd cannot be assigned */
 #if !defined(CONFIG_X86) && !defined(CONFIG_ARM)
 __weak void arch_setup_gd(struct global_data *gd_ptr)
@@ -110,9 +100,6 @@ ulong board_init_f_alloc_reserve(ulong top)
 void board_init_f_init_reserve(ulong base)
 {
 	struct global_data *gd_ptr;
-#ifndef _USE_MEMCPY
-	int *ptr;
-#endif
 
 	/*
 	 * clear GD entirely and set it up.
@@ -121,12 +108,7 @@ void board_init_f_init_reserve(ulong base)
 
 	gd_ptr = (struct global_data *)base;
 	/* zero the area */
-#ifdef _USE_MEMCPY
 	memset(gd_ptr, '\0', sizeof(*gd));
-#else
-	for (ptr = (int *)gd_ptr; ptr < (int *)(gd_ptr + 1); )
-		*ptr++ = 0;
-#endif
 	/* set GD unless architecture did it already */
 #if !defined(CONFIG_ARM)
 	arch_setup_gd(gd_ptr);