soundwire: intel: add comment for control stream cap/chmap

add comment and newline to mark out control stream capabilities and
chmap. These registers are unused by the driver, only dumped in
debugfs.
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Rander Wang <rander.wang@intel.com>
Signed-off-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Link: https://lore.kernel.org/r/20220823053846.2684635-7-yung-chuan.liao@linux.intel.comSigned-off-by: Vinod Koul <vkoul@kernel.org>

include/linux/soundwire/sdw_intel.h

@@ -38,11 +38,13 @@
 #define SDW_SHIM_SYNC_CMDSYNC		BIT(16)
 #define SDW_SHIM_SYNC_SYNCGO		BIT(24)
 
+/* Control stream capabililities and channel mask */
 #define SDW_SHIM_CTLSCAP(x)		(0x010 + 0x60 * (x))
 #define SDW_SHIM_CTLS0CM(x)		(0x012 + 0x60 * (x))
 #define SDW_SHIM_CTLS1CM(x)		(0x014 + 0x60 * (x))
 #define SDW_SHIM_CTLS2CM(x)		(0x016 + 0x60 * (x))
 #define SDW_SHIM_CTLS3CM(x)		(0x018 + 0x60 * (x))
+
 #define SDW_SHIM_PCMSCAP(x)		(0x020 + 0x60 * (x))
 
 #define SDW_SHIM_PCMSYCHM(x, y)		(0x022 + (0x60 * (x)) + (0x2 * (y)))