efi_loader: clear screen should move cursor to home

On a VT100 terminal <ESC>[2J should be enough to both clear the whole
screen and set the cursor to position (1, 1). But the Linux console does
not behave like this. So send an extra <ESC>[H. For reference see the
console_codes(4) man page.

Add a function description.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
1 file changed