IB/hfi1: Remove pstate from hfi1_pportdata

Do not track physical state separately from host_link_state.
Deduce physical state from host_link_state when required.
Change cache_physical_state to log_physical_state to make
sure host_link_state reflects hardwares physical state properly.

Reviewed-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Reviewed-by: Ira Weiny <ira.weiny@intel.com>
Signed-off-by: Jakub Byczkowski <jakub.byczkowski@intel.com>
Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>

drivers/infiniband/hw/hfi1/mad.c

@@ -1181,7 +1181,7 @@ static int physical_transition_allowed(int old, int new)
 static int port_states_transition_allowed(struct hfi1_pportdata *ppd,
 					  u32 logical_new, u32 physical_new)
 {
-	u32 physical_old = driver_physical_state(ppd);
+	u32 physical_old = driver_pstate(ppd);
 	u32 logical_old = driver_lstate(ppd);
 	int ret, logical_allowed, physical_allowed;