staging: visorchipset: fix sparse warnings about static declaration

Some functions were prototyped as static but the actual definition
wasn't. While this is valid (the function is static because the two
declarations don't conflict and the first one is static), this makes
sparse unhappy and cause confusion of normal people too.

Signed-off-by: Vincent Bernat <vincent@bernat.im>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/unisys/visorchipset/visorchipset_main.c

@@ -351,8 +351,9 @@ static void controlvm_respond_physdev_changestate(CONTROLVM_MESSAGE_HEADER *
 						  msgHdr, int response,
 						  ULTRA_SEGMENT_STATE state);
 
-ssize_t toolaction_show(struct device *dev, struct device_attribute *attr,
-		char *buf)
+static ssize_t toolaction_show(struct device *dev,
+			       struct device_attribute *attr,
+			       char *buf)
 {
 	u8 toolAction;
 
@@ -362,8 +363,9 @@ ssize_t toolaction_show(struct device *dev, struct device_attribute *attr,
 	return scnprintf(buf, PAGE_SIZE, "%u\n", toolAction);
 }
 
-ssize_t toolaction_store(struct device *dev, struct device_attribute *attr,
-		const char *buf, size_t count)
+static ssize_t toolaction_store(struct device *dev,
+				struct device_attribute *attr,
+				const char *buf, size_t count)
 {
 	u8 toolAction;
 	int ret;
@@ -381,8 +383,9 @@ ssize_t toolaction_store(struct device *dev, struct device_attribute *attr,
 		return count;
 }
 
-ssize_t boottotool_show(struct device *dev, struct device_attribute *attr,
-		char *buf)
+static ssize_t boottotool_show(struct device *dev,
+			       struct device_attribute *attr,
+			       char *buf)
 {
 	ULTRA_EFI_SPAR_INDICATION efiSparIndication;
 
@@ -394,8 +397,9 @@ ssize_t boottotool_show(struct device *dev, struct device_attribute *attr,
 			efiSparIndication.BootToTool);
 }
 
-ssize_t boottotool_store(struct device *dev, struct device_attribute *attr,
-		const char *buf, size_t count)
+static ssize_t boottotool_store(struct device *dev,
+				struct device_attribute *attr,
+				const char *buf, size_t count)
 {
 	int val, ret;
 	ULTRA_EFI_SPAR_INDICATION efiSparIndication;
@@ -1897,7 +1901,7 @@ handle_command(CONTROLVM_MESSAGE inmsg, HOSTADDRESS channel_addr)
 	return TRUE;
 }
 
-HOSTADDRESS controlvm_get_channel_address(void)
+static HOSTADDRESS controlvm_get_channel_address(void)
 {
 	u64 addr = 0;
 	u32 size = 0;