Snagboot v2.2 release

- docs:
    provide some performance indicators for Snagfactory

- snagflash:
    add a Fastboot command to flash Android Sparse Image files

- snagrecover:
    add support for AM62Lx platforms

Signed-off-by: Romain Gantois <romain.gantois@bootlin.com>

Author: rgantois

src/snagrecover/__init__.py

@@ -5,4 +5,4 @@
 """
 
 # Global version string for Snagboot
-__version__ = "2.1"
+__version__ = "2.2"