Modify crossystem to recognize Panther Point GPIO controller

There is a filter in crossystem which makes sure that it accepts GPIO
information only from a subset of GPIO controllers. Panther Point
needs to be included in the list.

BUG=chrome-os-partner:8615
TEST=manual
 . run the new crossystem on a Link
 . modify write protect and and recovery (as it comes from servo-2)
   pins' status
 . observe the appropriate crossystem values change

Change-Id: I3ac269a9ea520f2c44ee090fe71ec8ad808692ba
Signed-off-by: Vadim Bendebury <vbendeb@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/18936
Reviewed-by: Hung-Te Lin <hungte@chromium.org>
Reviewed-by: Vincent Palatin <vpalatin@chromium.org>
diff --git a/host/arch/x86/lib/crossystem_arch.c b/host/arch/x86/lib/crossystem_arch.c
index 6ef9063..2d4a79b 100644
--- a/host/arch/x86/lib/crossystem_arch.c
+++ b/host/arch/x86/lib/crossystem_arch.c
@@ -561,7 +561,8 @@
   if (!ReadFileString(controller_name, sizeof(controller_name), name))
     return -1;
   if ((0 != strcmp(controller_name, "NM10")) &&
-      (0 != strcmp(controller_name, "CougarPoint")))
+      (0 != strcmp(controller_name, "CougarPoint")) &&
+      (0 != strcmp(controller_name, "PantherPoint")))
     return -1;
 
   /* Modify GPIO number by driver's offset */