firewire: replace get_features card driver hook

by feature variables in the fw_card struct.  The hook appeared to be an
unnecessary abstraction in the card driver interface.

Cleaner would be to pass those feature flags as arguments to
fw_card_initialize() or fw_card_add(), but the FairnessControl register
is in the SCLK domain and may therefore not be accessible while Link
Power Status is off, i.e. before the card->driver->enable call from
fw_card_add().

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>

include/linux/firewire.h

@@ -122,6 +122,9 @@ struct fw_card {
 	bool bm_abdicate; /* value of csr_abdicate before last bus reset */
 	bool csr_abdicate; /* visible in CSR STATE_CLEAR/SET registers */
 
+	bool priority_budget_implemented;	/* controller feature */
+	bool broadcast_channel_auto_allocated;	/* controller feature */
+
 	bool broadcast_channel_allocated;
 	u32 broadcast_channel;
 	__be32 topology_map[(CSR_TOPOLOGY_MAP_END - CSR_TOPOLOGY_MAP) / 4];