Remove warnings from compilation of the s2892 with and without CBFS.

I didn't try to remove "defined but not used" warnings because there are too
many ifdefs to be sure I wouldn't break something.

For shadowed variable declarations I renamed the inner-most variable.  

The one in src/pc80/keyboard.c might need help.  I didn't change the
functionality but it looks like a bug.

I boot tested it on s2892 and abuild tested it.

Signed-off-by: Myles Watson <mylesgw@gmail.com>
Acked-by: Ronald G. Minnich <rminnich@gmail.com>


git-svn-id: svn://svn.coreboot.org/coreboot/trunk@4240 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1

src/boot/hardwaremain.c

@@ -99,9 +99,9 @@ void hardwaremain(int boot_complete)
 	lb_mem = write_tables();
 #if CONFIG_CBFS == 1
 # if USE_FALLBACK_IMAGE == 1
-	void (*pl)(void) = cbfs_load_payload(lb_mem, "fallback/payload");
+	cbfs_load_payload(lb_mem, "fallback/payload");
 # else
-	void (*pl)(void) = cbfs_load_payload(lb_mem, "normal/payload");
+	cbfs_load_payload(lb_mem, "normal/payload");
 # endif
 #else