Documentation/: fix warnings from -Wmissing-prototypes in HOSTCFLAGS

Fix up -Wmissing-prototypes in compileable userspace code, mainly under
Documentation/.

Signed-off-by: Ladinu Chandrasinghe <ladinu.pub@gmail.com>
Signed-off-by: Trevor Keith <tsrk@tsrk.net>
Cc: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/Documentation/ia64/aliasing-test.c b/Documentation/ia64/aliasing-test.c
index d23610f..3dfb76c 100644
--- a/Documentation/ia64/aliasing-test.c
+++ b/Documentation/ia64/aliasing-test.c
@@ -24,7 +24,7 @@
 
 int sum;
 
-int map_mem(char *path, off_t offset, size_t length, int touch)
+static int map_mem(char *path, off_t offset, size_t length, int touch)
 {
 	int fd, rc;
 	void *addr;
@@ -62,7 +62,7 @@
 	return 0;
 }
 
-int scan_tree(char *path, char *file, off_t offset, size_t length, int touch)
+static int scan_tree(char *path, char *file, off_t offset, size_t length, int touch)
 {
 	struct dirent **namelist;
 	char *name, *path2;
@@ -119,7 +119,7 @@
 
 char buf[1024];
 
-int read_rom(char *path)
+static int read_rom(char *path)
 {
 	int fd, rc;
 	size_t size = 0;
@@ -146,7 +146,7 @@
 	return size;
 }
 
-int scan_rom(char *path, char *file)
+static int scan_rom(char *path, char *file)
 {
 	struct dirent **namelist;
 	char *name, *path2;