sparse: Rename the file and header

The Android sparse image format is currently supported through a file
called aboot, which isn't really such a great name, since the sparse image
format is only used for transferring data with fastboot.

Rename the file and header to a file called "sparse", which also makes it
consistent with the header defining the image structures.

Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Reviewed-by: Tom Rini <trini@konsulko.com>

include/image-sparse.h

@@ -0,0 +1,35 @@
+/*
+ * Copyright 2014 Broadcom Corporation.
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <part.h>
+#include <sparse_format.h>
+
+#define ROUNDUP(x, y)	(((x) + ((y) - 1)) & ~((y) - 1))
+
+typedef struct sparse_storage {
+	unsigned int	block_sz;
+	unsigned int	start;
+	unsigned int	size;
+	const char	*name;
+
+	int	(*write)(struct sparse_storage *storage, void *priv,
+			 unsigned int offset, unsigned int size,
+			 char *data);
+} sparse_storage_t;
+
+static inline int is_sparse_image(void *buf)
+{
+	sparse_header_t *s_header = (sparse_header_t *)buf;
+
+	if ((le32_to_cpu(s_header->magic) == SPARSE_HEADER_MAGIC) &&
+	    (le16_to_cpu(s_header->major_version) == 1))
+		return 1;
+
+	return 0;
+}
+
+int store_sparse_image(sparse_storage_t *storage, void *storage_priv,
+		       unsigned int session_id, void *data);