includes: move openssl headers to include/u-boot

commit 18b06652cd "tools: include u-boot version of sha256.h"
unconditionally forced the sha256.h from u-boot to be used
for tools instead of the host version. This is fragile though
as it will also include the host version. Therefore move it
to include/u-boot to join u-boot/md5.h etc which were renamed
for the same reason.

cc: Simon Glass <sjg@chromium.org>
Signed-off-by: Jeroen Hofstee <jeroen@myspectrum.nl>
diff --git a/include/u-boot/rsa-checksum.h b/include/u-boot/rsa-checksum.h
new file mode 100644
index 0000000..c996fb3
--- /dev/null
+++ b/include/u-boot/rsa-checksum.h
@@ -0,0 +1,24 @@
+/*
+ * Copyright (c) 2013, Andreas Oetken.
+ *
+ * SPDX-License-Identifier:    GPL-2.0+
+*/
+
+#ifndef _RSA_CHECKSUM_H
+#define _RSA_CHECKSUM_H
+
+#include <errno.h>
+#include <image.h>
+#include <u-boot/sha1.h>
+#include <u-boot/sha256.h>
+
+extern const uint8_t padding_sha256_rsa4096[];
+extern const uint8_t padding_sha256_rsa2048[];
+extern const uint8_t padding_sha1_rsa2048[];
+
+void sha256_calculate(const struct image_region region[], int region_count,
+		      uint8_t *checksum);
+void sha1_calculate(const struct image_region region[], int region_count,
+		    uint8_t *checksum);
+
+#endif