alpha: fix mkbb compilation warnings

In current 2.6.23-rc1+git, make bootimage gives the following warnings while
compiling mkbb.c.  The patch below fixes these warnings by using the proper
include for exit() and using appropriate printf format.

  HOSTCC  arch/alpha/boot/tools/mkbb
arch/alpha/boot/tools/mkbb.c: In function 'main':
arch/alpha/boot/tools/mkbb.c:95: warning: implicit declaration of function 'exit'
arch/alpha/boot/tools/mkbb.c:95: warning: incompatible implicit declaration of built-in function 'exit'
arch/alpha/boot/tools/mkbb.c:102: warning: incompatible implicit declaration of built-in function 'exit'
arch/alpha/boot/tools/mkbb.c:110: warning: incompatible implicit declaration of built-in function 'exit'
arch/alpha/boot/tools/mkbb.c:117: warning: format '%d' expects type 'int', but argument 3 has type 'long unsigned int'
arch/alpha/boot/tools/mkbb.c:118: warning: incompatible implicit declaration of built-in function 'exit'
arch/alpha/boot/tools/mkbb.c:125: warning: format '%d' expects type 'int', but argument 3 has type 'long unsigned int'
arch/alpha/boot/tools/mkbb.c:126: warning: incompatible implicit declaration of built-in function 'exit'
arch/alpha/boot/tools/mkbb.c:143: warning: incompatible implicit declaration of built-in function 'exit'
arch/alpha/boot/tools/mkbb.c:148: warning: incompatible implicit declaration of built-in function 'exit'

Signed-off-by: Meelis Roos <mroos@linux.ee>
Cc: Jay Estabrook <jay.estabrook@hp.com>
Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Cc: Richard Henderson <rth@twiddle.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

arch/alpha/boot/tools/mkbb.c

@@ -11,6 +11,7 @@
 
 #include <fcntl.h>
 #include <unistd.h>
+#include <stdlib.h>
 #include <stdio.h>
 
 /* Minimal definition of disklabel, so we don't have to include
@@ -114,7 +115,7 @@ int main(int argc, char ** argv)
     nread = read(fd, &bootloader_image, sizeof(bootblock));
     if(nread != sizeof(bootblock)) {
 	perror("lxboot read");
-	fprintf(stderr, "expected %d, got %d\n", sizeof(bootblock), nread);
+	fprintf(stderr, "expected %zd, got %d\n", sizeof(bootblock), nread);
 	exit(0);
     }
 
@@ -122,7 +123,7 @@ int main(int argc, char ** argv)
     nread = read(dev, &bootblock_from_disk, sizeof(bootblock));
     if(nread != sizeof(bootblock)) {
 	perror("bootblock read");
-	fprintf(stderr, "expected %d, got %d\n", sizeof(bootblock), nread);
+	fprintf(stderr, "expected %zd, got %d\n", sizeof(bootblock), nread);
 	exit(0);
     }