libpayload: Fix the putc function

Reverse rows and columns on the video putc() function, and watch printf 
work again.

Signed-off-by: Jordan Crouse <jordan.crouse@amd.com>
Acked-by: Myles Watson <mylesgw@gmail.com>



git-svn-id: svn://svn.coreboot.org/coreboot/trunk@3316 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1

payloads/libpayload/sample/hello.c

@@ -33,5 +33,6 @@
 
 int main(void)
 {
+	printf("Hello world!\n");
 	return 0;
 }