powerpc/cpm2_pic: Allow correct flow_types for port C interrupts
powerpc/cpm2_pic: Allow correct flow_types for port C interrupts

Port C interrupts can be either falling edge, or either edge.
Other external interrupts are either falling edge or active low.
Tested on a custom 8280 based board.

Signed-off-by: Mark Ware <16bbbebc5363796ddcbc03db1e2d9ea9f39b09e1@elphinstone.net>
Acked-by: Anton Vorontsov <f72eea26502475052d15bdce621d2155da84f214@ru.mvista.com>
Acked-by: Scott Wood <b77916c2feab81a70245e7b5671f4f02730ebf64@freescale.com>
Signed-off-by: Kumar Gala <383ef5577c6e1178b93f59ec8d0936f76d2a98c4@kernel.crashing.org>

TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,KristFoundation/Programs