According to the ChangeLog, spice needs glib2 since 0.12.2.
Thus add libglib2 dependency to fix build error if !BR2_PACKAGE_LIBGLIB2.
Also add a patch to fix trivial build error.
Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
