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/auxdisplay/cfag12864b-example.c b/Documentation/auxdisplay/cfag12864b-example.c
index 2caeea5..1d2c010 100644
--- a/Documentation/auxdisplay/cfag12864b-example.c
+++ b/Documentation/auxdisplay/cfag12864b-example.c
@@ -62,7 +62,7 @@
  * Unable to open: return = -1
  * Unable to mmap: return = -2
  */
-int cfag12864b_init(char *path)
+static int cfag12864b_init(char *path)
 {
 	cfag12864b_fd = open(path, O_RDWR);
 	if (cfag12864b_fd == -1)
@@ -81,7 +81,7 @@
 /*
  * exit a cfag12864b framebuffer device
  */
-void cfag12864b_exit(void)
+static void cfag12864b_exit(void)
 {
 	munmap(cfag12864b_mem, CFAG12864B_SIZE);
 	close(cfag12864b_fd);
@@ -90,7 +90,7 @@
 /*
  * set (x, y) pixel
  */
-void cfag12864b_set(unsigned char x, unsigned char y)
+static void cfag12864b_set(unsigned char x, unsigned char y)
 {
 	if (CFAG12864B_CHECK(x, y))
 		cfag12864b_buffer[CFAG12864B_ADDRESS(x, y)] |=
@@ -100,7 +100,7 @@
 /*
  * unset (x, y) pixel
  */
-void cfag12864b_unset(unsigned char x, unsigned char y)
+static void cfag12864b_unset(unsigned char x, unsigned char y)
 {
 	if (CFAG12864B_CHECK(x, y))
 		cfag12864b_buffer[CFAG12864B_ADDRESS(x, y)] &=
@@ -113,7 +113,7 @@
  * Pixel off: return = 0
  * Pixel on:  return = 1
  */
-unsigned char cfag12864b_isset(unsigned char x, unsigned char y)
+static unsigned char cfag12864b_isset(unsigned char x, unsigned char y)
 {
 	if (CFAG12864B_CHECK(x, y))
 		if (cfag12864b_buffer[CFAG12864B_ADDRESS(x, y)] &
@@ -126,7 +126,7 @@
 /*
  * not (x, y) pixel
  */
-void cfag12864b_not(unsigned char x, unsigned char y)
+static void cfag12864b_not(unsigned char x, unsigned char y)
 {
 	if (cfag12864b_isset(x, y))
 		cfag12864b_unset(x, y);
@@ -137,7 +137,7 @@
 /*
  * fill (set all pixels)
  */
-void cfag12864b_fill(void)
+static void cfag12864b_fill(void)
 {
 	unsigned short i;
 
@@ -148,7 +148,7 @@
 /*
  * clear (unset all pixels)
  */
-void cfag12864b_clear(void)
+static void cfag12864b_clear(void)
 {
 	unsigned short i;
 
@@ -162,7 +162,7 @@
  * Pixel off: src[i] = 0
  * Pixel on:  src[i] > 0
  */
-void cfag12864b_format(unsigned char * matrix)
+static void cfag12864b_format(unsigned char * matrix)
 {
 	unsigned char i, j, n;
 
@@ -182,7 +182,7 @@
 /*
  * blit buffer to lcd
  */
-void cfag12864b_blit(void)
+static void cfag12864b_blit(void)
 {
 	memcpy(cfag12864b_mem, cfag12864b_buffer, CFAG12864B_SIZE);
 }
@@ -198,7 +198,7 @@
 
 #define EXAMPLES	6
 
-void example(unsigned char n)
+static void example(unsigned char n)
 {
 	unsigned short i, j;
 	unsigned char matrix[CFAG12864B_WIDTH * CFAG12864B_HEIGHT];