tsif: tsif1 initialization bug fix

When using CONFIG_MSM_USE_TSIF1 to enable the second tsif instance,
the device initialization failed because of a errant device ID. The
check has been updated to accept the correct device ID range (0..1)

Signed-off-by: Joel Nider <jnider@codeaurora.org>

include/linux/tsif_api.h

@@ -104,6 +104,13 @@ enum tsif_state {
 	tsif_state_error    = 3,
 };
 
+/**
+ * tsif_get_active - return active tsif hardware instance
+ *
+ * Return     TSIF instance to use (selected by CONFIG_MSM_USE_TSIF1)
+ */
+int tsif_get_active(void);
+
 /**
  * tsif_attach - Attach to the device.
  * @id:       TSIF device ID, used to identify TSIF instance.