When using nographic, explicitly disabling vga is needed some cases
since some qemu firmware (OpenFirmware ) defaults to std vga, and
when vga is enabled then it disables output to serial and redirects
that to vga which is by design, hwoever we expect the console output
to go to serial when using nographic, therefore its important to
disable vga with nographic especially on qemu based ppc platforms
Signed-off-by: Khem Raj <raj.khem@gmail.com> Cc: Alexander Kanavin <alex.kanavin@gmail.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
