openmoko2.bbclass, openmoko-base.bbclass: Fix openmoko_two_get_license and openmoko_t...

openmoko2.bbclass, openmoko-base.bbclass: Fix openmoko_two_get_license and openmoko_two_get_subdir

Usually openmoko inheriting recipes have SECTION like openmoko/libs
etc then the code works well but for packages e.g. -dev -dbg same
section is not true and the functions fail

File "openmoko2.bbclass", line 2, in openmoko_two_get_subdir
ValueError: need more than 1 value to unpack

This patch makes sure to split the string only if SECTION contains '/'

Signed-off-by: Khem Raj <raj.khem@gmail.com>