Staging: silicom: remove the board_t typedef in bpctl_mod.c

Replace the board_t enum typdef with struct board_type (_type for
consistency with media_type, above), resolving a checkpatch.pl
warning. (As far as I can tell, this isn't used anywhere.)
Signed-off-by: Chad Williamson <chad@dahc.us>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/silicom/bpctl_mod.c

@@ -5815,7 +5815,7 @@ static const struct file_operations Fops = {
 #define SILICOM_E1000BP_ETHERNET_DEVICE(device_id) {\
 	PCI_DEVICE(SILICOM_VID, device_id)}
 
-typedef enum {
+enum board_type {
 	PXG2BPFI,
 	PXG2BPFIL,
 	PXG2BPFILX,
@@ -5973,7 +5973,7 @@ typedef enum {
 	PE310G4BPi9SR,
 	PE310G4BPi9LR,
 	PE210G2BPi40,
-} board_t;
+};
 
 typedef struct _bpmod_info_t {
 	unsigned int vendor;