packaging: error while loading shared libraries: libSDL2-2.0.so.0

Added the "libsdl2-dev" dependency in file
"misc/packaging/gen_acrn_deb.py"

Tracked-On: projectacrn#7291
Signed-off-by: zihengL1 <ziheng.li@intel.com>

misc/packaging/gen_acrn_deb.py

@@ -90,6 +90,7 @@ def create_acrn_deb(board, scenario, version, build_dir):
         'Package: acrn-hypervisor\n',
         'version: %s \n' % version,
         'Depends: libcjson1\n',
+        'Pre-Depends: libsdl2-dev\n',
         'Section: free \n',
         'Priority: optional \n',
         'Architecture: amd64 \n',