ALSA: lx6464es - command buffer API cleanup

the command buffer is only accessed from one file, so we can declare the
specific functions as static in that file
Signed-off-by: NTim Blechmann <tim@klingt.org>
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

sound/pci/lx6464es/lx_core.c

@@ -78,7 +78,8 @@ unsigned long lx_dsp_reg_read(struct lx6464es *chip, int port)
 	return ioread32(address);
 }
 
-void lx_dsp_reg_readbuf(struct lx6464es *chip, int port, u32 *data, u32 len)
+static void lx_dsp_reg_readbuf(struct lx6464es *chip, int port, u32 *data,
+			       u32 len)
 {
 	void __iomem *address = lx_dsp_register(chip, port);
 	memcpy_fromio(data, address, len*sizeof(u32));
@@ -91,8 +92,8 @@ void lx_dsp_reg_write(struct lx6464es *chip, int port, unsigned data)
 	iowrite32(data, address);
 }
 
-void lx_dsp_reg_writebuf(struct lx6464es *chip, int port, const u32 *data,
-			 u32 len)
+static void lx_dsp_reg_writebuf(struct lx6464es *chip, int port,
+				const u32 *data, u32 len)
 {
 	void __iomem *address = lx_dsp_register(chip, port);
 	memcpy_toio(address, data, len*sizeof(u32));

sound/pci/lx6464es/lx_core.h

@@ -72,10 +72,7 @@ enum {
 };
 
 unsigned long lx_dsp_reg_read(struct lx6464es *chip, int port);
-void lx_dsp_reg_readbuf(struct lx6464es *chip, int port, u32 *data, u32 len);
 void lx_dsp_reg_write(struct lx6464es *chip, int port, unsigned data);
-void lx_dsp_reg_writebuf(struct lx6464es *chip, int port, const u32 *data,
-			 u32 len);
 
 /* plx register access */
 enum {