arch/x86/mmap_boot.c: Clean up includes

Signed-off-by: Elyes Haouas <ehaouas@noos.fr>
Change-Id: I85e60c189c1ec1da5cf0e5b864447ef6f7b3f548
Reviewed-on: https://review.coreboot.org/c/coreboot/+/68033
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Martin L Roth <gaumless@gmail.com>

src/arch/x86/mmap_boot.c

@@ -1,8 +1,8 @@
 /* SPDX-License-Identifier: GPL-2.0-only */
 
 #include <boot_device.h>
-#include <endian.h>
 #include <spi_flash.h>
+#include <stdint.h>
 
 /* The ROM is memory mapped just below 4GiB. Form a pointer for the base. */
 #define rom_base ((void *)(uintptr_t)(0x100000000ULL-CONFIG_ROM_SIZE))