DMAENGINE: ste_dma40: added kernel doc for struct

The half-channel struct was undocumented.
Signed-off-by: Jonas Aaberg <jonas.aberg@stericsson.com>
Signed-off-by: Linus Walleij <linus.walleij@stericsson.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>

arch/arm/plat-nomadik/include/plat/ste_dma40.h

@@ -91,13 +91,6 @@ enum stedma40_periph_data_width {
 	STEDMA40_DOUBLEWORD_WIDTH = STEDMA40_ESIZE_64_BIT
 };
 
-struct stedma40_half_channel_info {
-	enum stedma40_endianess endianess;
-	enum stedma40_periph_data_width data_width;
-	int psize;
-	enum stedma40_flow_ctrl flow_ctrl;
-};
-
 enum stedma40_xfer_dir {
 	STEDMA40_MEM_TO_MEM = 1,
 	STEDMA40_MEM_TO_PERIPH,
@@ -106,6 +99,21 @@ enum stedma40_xfer_dir {
 };
 
 
+/**
+ * struct stedma40_chan_cfg - dst/src channel configuration
+ *
+ * @endianess: Endianess of the src/dst hardware
+ * @data_width: Data width of the src/dst hardware
+ * @p_size: Burst size
+ * @flow_ctrl: Flow control on/off.
+ */
+struct stedma40_half_channel_info {
+	enum stedma40_endianess endianess;
+	enum stedma40_periph_data_width data_width;
+	int psize;
+	enum stedma40_flow_ctrl flow_ctrl;
+};
+
 /**
  * struct stedma40_chan_cfg - Structure to be filled by client drivers.
  *