We $(PLATFORM_SUBDIR)/target.mk gets included, include/kernel-version.mk...

We $(PLATFORM_SUBDIR)/target.mk gets included, include/kernel-version.mk hasn't yet been included... therefore KERNEL_PATCHVER hasn't yet been defined.

Ergo, we need to use a deferred definition of GEOS_GPIO (and can't use ifeq/endif).

Signed-off-by: Philip Prindeville <philipp@openwrt.org>

SVN-Revision: 26397