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>
diff --git a/common/fb_nand.c b/common/fb_nand.c
index 57cbde0..9ca8602 100644
--- a/common/fb_nand.c
+++ b/common/fb_nand.c
@@ -8,8 +8,8 @@
 #include <config.h>
 #include <common.h>
 
-#include <aboot.h>
 #include <fastboot.h>
+#include <image-sparse.h>
 #include <sparse_format.h>
 
 #include <linux/mtd/mtd.h>