git-svn-id: svn://svn.rockbox.org/rockbox/trunk@14936 a1c6a512-1295-4272-9138-f99709370657
adds the very begining of the rtc driver (only reads the time currently git-svn-id: svn://svn.rockbox.org/rockbox/trunk@14935 a1c6a512-1295-4272-9138-f99709370657