staging: dgnc: adds TODO

This patchs adds a TODO for the driver.
Signed-off-by: NLidza Louina <lidza.louina@gmail.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/dgnc/TODO

+* remove kzalloc casts
+* checkpatch fixes
+* sparse fixes
+* fix use of sizeof(). Example replace sizeof(struct board_t) 
+  with sizeof(*brd) and remove sizeof(char)
+* change name of board_t to dgnc_board
+* split two assignments into the two assignments on two lines;
+  don't use two equals signs
+* remove unecessary comments
+* remove unecessary error messages. Example kzalloc() has its 
+  own error message. Adding an extra one is useless.
+* use goto statements for error handling when appropriate
+* there is a lot of unecessary code in the driver. It was 
+  originally a standalone driver. Remove uneeded code.
+
+Please send patches to Greg Kroah-Hartman <greg@kroah.com> and 
+Cc: Lidza Louina <lidza.louina@gmail.com>