unicore32: select ARCH_MIGHT_HAVE_PC_PARPORT

Architectures which support CONFIG_PARPORT_PC should select
ARCH_MIGHT_HAVE_PC_PARPORT.
Signed-off-by: Mark Salter <msalter@redhat.com>
CC: Guan Xuetao <gxt@mprc.pku.edu.cn>

arch/unicore32/Kconfig

 config UNICORE32
 	def_bool y
+	select ARCH_MIGHT_HAVE_PC_PARPORT
 	select HAVE_MEMBLOCK
 	select HAVE_GENERIC_DMA_COHERENT
 	select HAVE_DMA_ATTRS