staging: most: dim2: hal: Demote non-conformant kernel-doc headers

Fixes the following W=1 kernel build warning(s):

 drivers/staging/most/dim2/hal.c:99: warning: This comment starts with '/**', but isn't a kernel-doc comment. Refer Documentation/doc-guide/kernel-doc.rst
 drivers/staging/most/dim2/hal.c:788: warning: Function parameter or member 'buf_size' not described in 'dim_norm_isoc_buffer_size'
 drivers/staging/most/dim2/hal.c:788: warning: Function parameter or member 'packet_length' not described in 'dim_norm_isoc_buffer_size'
 drivers/staging/most/dim2/hal.c:788: warning: expecting prototype for Retrieves maximal possible correct buffer size for isochronous data type(). Prototype was for dim_norm_isoc_buffer_size() instead
 drivers/staging/most/dim2/hal.c:802: warning: Function parameter or member 'buf_size' not described in 'dim_norm_sync_buffer_size'
 drivers/staging/most/dim2/hal.c:802: warning: Function parameter or member 'bytes_per_frame' not described in 'dim_norm_sync_buffer_size'
 drivers/staging/most/dim2/hal.c:802: warning: expecting prototype for Retrieves maximal possible correct buffer size for synchronous data type(). Prototype was for dim_norm_sync_buffer_size() instead

Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Lee Jones <lee.jones@linaro.org>
Cc: Andrey Shvetsov <andrey.shvetsov@k2l.de>
Cc: linux-staging@lists.linux.dev
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Link: https://lore.kernel.org/r/20210414181129.1628598-36-lee.jones@linaro.orgSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/most/dim2/hal.c

@@ -96,9 +96,9 @@ static int dbr_get_mask_size(u16 size)
 }
 
 /**
- * Allocates DBR memory.
+ * alloc_dbr() - Allocates DBR memory.
  * @size: Allocating memory size.
- * @return Offset in DBR memory by success or DBR_SIZE if out of memory.
+ * Returns: Offset in DBR memory by success or DBR_SIZE if out of memory.
  */
 static int alloc_dbr(u16 size)
 {

drivers/staging/qlge/qlge_main.c

@@ -1389,7 +1389,7 @@ static void qlge_categorize_rx_err(struct qlge_adapter *qdev, u8 rx_err,
 	}
 }
 
-/**
+/*
  * qlge_update_mac_hdr_len - helper routine to update the mac header length
  * based on vlan tags if present
  */
@@ -2235,7 +2235,7 @@ static void qlge_vlan_mode(struct net_device *ndev, netdev_features_t features)
 	}
 }
 
-/**
+/*
  * qlge_update_hw_vlan_features - helper routine to reinitialize the adapter
  * based on the features to enable/disable hardware vlan accel
  */