core: Add some static libraries

 * Add static versions of libdiskconfig and libsysutils for MiniVold

Change-Id: I9ea9498dcff3f094bbcbb1e05e6d10bc9b83ac74
Fix gr_text() syntax until minui gets updated

Change-Id: Ie6d72013944d7ce6d2c0a244862b464e513fa389
charger: Fix arguments to gr_text

 * CWM's minui is oldschool, so comment this out for now.

Change-Id: If88d2df820b164fbb02ce6c40cba42de7880e86a