fastboot: Move fastboot response functions to fastboot core

The functions and a few define to generate a fastboot message to be sent
back to the host were so far duplicated among the users.

Move them all to a common place.

Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
diff --git a/include/aboot.h b/include/aboot.h
index 30e4d36..18ff07a 100644
--- a/include/aboot.h
+++ b/include/aboot.h
@@ -9,9 +9,6 @@
 
 #define ROUNDUP(x, y)	(((x) + ((y) - 1)) & ~((y) - 1))
 
-void fastboot_fail(const char *s);
-void fastboot_okay(const char *s);
-
 static inline int is_sparse_image(void *buf)
 {
 	sparse_header_t *s_header = (sparse_header_t *)buf;
@@ -23,6 +20,6 @@
 	return 0;
 }
 
-void write_sparse_image(block_dev_desc_t *dev_desc,
-		disk_partition_t *info, const char *part_name,
-		void *data, unsigned sz);
+int write_sparse_image(block_dev_desc_t *dev_desc,
+		       disk_partition_t *info, const char *part_name,
+		       void *data, unsigned sz);
diff --git a/include/fastboot.h b/include/fastboot.h
new file mode 100644
index 0000000..db826d2
--- /dev/null
+++ b/include/fastboot.h
@@ -0,0 +1,22 @@
+/*
+ * (C) Copyright 2008 - 2009
+ * Windriver, <www.windriver.com>
+ * Tom Rix <Tom.Rix@windriver.com>
+ *
+ * Copyright 2011 Sebastian Andrzej Siewior <bigeasy@linutronix.de>
+ *
+ * Copyright 2014 Linaro, Ltd.
+ * Rob Herring <robh@kernel.org>
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+#ifndef _FASTBOOT_H_
+#define _FASTBOOT_H_
+
+/* The 64 defined bytes plus \0 */
+#define FASTBOOT_RESPONSE_LEN	(64 + 1)
+
+void fastboot_fail(char *response, const char *reason);
+void fastboot_okay(char *response, const char *reason);
+
+#endif /* _FASTBOOT_H_ */