tools/mkimage: Update U-Boot to version 2019.07

This updates the U-Boot which provides the host tools like mkimage to
version 2019.07.
The patches were cleaned up and it was checked if this still compiles
on Linux and FreeBSD.

CONFIG_FIT_SIGNATURE_MAX_SIZE is set to the default value.

The patch for libressl was merged upstream.

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>

tools/mkimage/patches/060-remove_kernel_includes.patch

@@ -1,17 +1,6 @@
---- a/include/compiler.h
-+++ b/include/compiler.h
-@@ -66,6 +66,11 @@ typedef uint8_t __u8;
- typedef uint16_t __u16;
- typedef uint32_t __u32;
- typedef unsigned int uint;
-+typedef uint64_t __u64;
-+#ifndef linux
-+typedef int __kernel_daddr_t;
-+typedef unsigned int __kernel_ino_t;
-+#endif
- 
- #define uswap_16(x) \
- 	((((x) & 0xff00) >> 8) | \
+The Kernel includes are only available on Linux hosts, remove then on
+non Linux hosts. 
+
 --- a/include/linux/posix_types.h
 +++ b/include/linux/posix_types.h
 @@ -43,6 +43,8 @@ typedef void (*__kernel_sighandler_t)(in
@@ -23,13 +12,18 @@
 +#endif
  
  #endif /* _LINUX_POSIX_TYPES_H */
---- a/include/linux/types.h
-+++ b/include/linux/types.h
-@@ -2,7 +2,6 @@
- #define _LINUX_TYPES_H
+--- a/include/imx8image.h
++++ b/include/imx8image.h
+@@ -11,7 +11,12 @@
+ #include <image.h>
+ #include <inttypes.h>
+ #include "imagetool.h"
++#ifdef linux
+ #include "linux/kernel.h"
++#else
++#define ALIGN(x,a)		__ALIGN_MASK((x),(typeof(x))(a)-1)
++#define __ALIGN_MASK(x,mask)	(((x)+(mask))&~(mask))
++#endif
  
- #include <linux/posix_types.h>
--#include <asm/types.h>
- #include <stdbool.h>
+ #define __packed   __attribute__((packed))
  
- #ifndef __KERNEL_STRICT_NAMES