Make cursor positioning work by using both halves of the

Make cursor positioning work by using both halves of the
VGA cursor position register.

Have vga_scroll_up() and vga_clear_line() present row/column
arguments to the VIDEO() macro in the right order.

Signed-off-by: Jonathan A. Kollasch <jakllsch@kollasch.net>
Acked-by: Jordan Crouse <jordan.crouse@amd.com>
-This line, and those below, will be ignored--

M    libpayload/drivers/vga.c

git-svn-id: svn://svn.coreboot.org/coreboot/trunk@3186 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1