The FSF address has changed in the past. Instead of updating it
each time the address changes, just drop it completely treewide.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

Silences these warnings:

arch/x86/boot/boot_hdisk.S:29: Warning: documented function `void real_start' was not declared or defined.
arch/x86/boot/boot_main.S:28: Warning: documented function `void _start' was not declared or defined.
arch/x86/boot/pmjump.S:20: Warning: documented function `void protected_mode_jump' was not declared or defined.
arch/x86/lib/memory16.S:32: Warning: documented function `unsigned short bios_get_memsize' was not declared or defined.
arch/x86/lib/traveler.S:31: Warning: documented function `void real_to_prot' was not declared or defined.
arch/x86/lib/traveler.S:38: Warning: documented function `void prot_to_real' was not declared or defined.

Signed-off-by: Robert Schwebel <r.schwebel@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

Add some generic functions to make barebox work on x86.

Signed-off-by: Juergen Beisert <jbe@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>