ASoC: SOF: Wire up buffer flags

Buffer flags have been in firmware for ages but were never fully
implemented in the topology/kernel system. This commit finishes off the
implementation.

Reviewed-by: Ranjani Sridharan <[e-mail]>
Signed-off-by: Curtis Malainey <[e-mail]>
Signed-off-by: Pierre-Louis Bossart <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Mark Brown <[e-mail]>

include/uapi/sound/sof/tokens.h

···
 /* buffers */
 #define SOF_TKN_BUF_SIZE			100
 #define SOF_TKN_BUF_CAPS			101
+#define SOF_TKN_BUF_FLAGS			102
 
 /* DAI */
 /* Token retired with ABI 3.2, do not use for new capabilities

sound/soc/sof/ipc3-topology.c

···
 		offsetof(struct sof_ipc_buffer, size)},
 	{SOF_TKN_BUF_CAPS, SND_SOC_TPLG_TUPLE_TYPE_WORD, get_token_u32,
 		offsetof(struct sof_ipc_buffer, caps)},
+	{SOF_TKN_BUF_FLAGS, SND_SOC_TPLG_TUPLE_TYPE_WORD, get_token_u32,
+		offsetof(struct sof_ipc_buffer, flags)},
 };
 
 /* DAI */