Fixes:

arch/mips/mach-bcm47xx/include/mach/debug_ll.h: In function 'PUTC_LL':
arch/mips/mach-bcm47xx/include/mach/debug_ll.h:33: warning: passing argument 1 of '__raw_readb' makes pointer from integer without a cast
arch/mips/mach-bcm47xx/include/mach/debug_ll.h:34: warning: passing argument 2 of '__raw_writeb' makes pointer from integer without a cast

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

putc already is a regular barebox function. To avoid conflicts and
confusions just let architectures define PUTC_LL directly instead
of going through this addiotional redirection.

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

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>

To allow for some generic io accessors introduce io.h and use
this instead of asm/io.h throughout the tree.

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

Signed-off-by: Antony Pavlov <antonynpavlov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>