bedbug_860.c, bedbug_603e.c: Fix return type to silence compile warnings.

commit 47e26b1b "cmd_usage(): simplify return code handling" caused
the following compile warnings:

bedbug_860.c: In function 'bedbug860_do_break':
bedbug_860.c:73: warning: 'return' with a value, in function returning void
bedbug_860.c:121: warning: 'return' with a value, in function returning void

Fix the return type.

Actually these files could need some cleanup - commands should
return proper error codes, and there are coding style issues.
=> To be fixed later.

Signed-off-by: Wolfgang Denk <wd@denx.de>
diff --git a/arch/powerpc/cpu/mpc8260/bedbug_603e.c b/arch/powerpc/cpu/mpc8260/bedbug_603e.c
index 89193a3..92f8957 100644
--- a/arch/powerpc/cpu/mpc8260/bedbug_603e.c
+++ b/arch/powerpc/cpu/mpc8260/bedbug_603e.c
@@ -70,8 +70,10 @@
   int		which_bp;       /* Breakpoint number    */
   /* -------------------------------------------------- */
 
-  if (argc < 2)
-    return cmd_usage(cmdtp);
+  if (argc < 2) {
+    cmd_usage(cmdtp);
+    return;
+  }
 
   /* Turn off a breakpoint */
 
@@ -114,8 +116,10 @@
 
   if(!(( isdigit( argv[ 1 ][ 0 ] )) ||
 	(( argv[ 1 ][ 0 ] >= 'a' ) && ( argv[ 1 ][ 0 ] <= 'f' )) ||
-	(( argv[ 1 ][ 0 ] >= 'A' ) && ( argv[ 1 ][ 0 ] <= 'F' ))))
-    return cmd_usage(cmdtp);
+	(( argv[ 1 ][ 0 ] >= 'A' ) && ( argv[ 1 ][ 0 ] <= 'F' )))) {
+    cmd_usage(cmdtp);
+    return;
+  }
 
   addr = simple_strtoul( argv[ 1 ], NULL, 16 );