e739663535 confused parameters to __raw_writel. The value and the base
address was mixed up.

Fixes: e739663535 (arm: at91: code cleanup in at91sam926x_board_init)

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

- drop dead code (CONFIG_SYS_MATRIX_MCFG_REMAP not defined)
- drop use of macros for simple __read/__write functions
- delete extra lines
- Trivial comments kept on a single line

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Reviewed-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

To prepare moving reset code to board code create at91sam926x_board_init.h.

at91sam926x_board_init.h is a copy of at91sam926x_lowlevel_init.c
with a few changes:
- We no longer call board code from this function
- The struct is renamed to avoid name clashes
- Function renamed to better match the prurpose

This file allows board code to include at91sam926x_board_init.h
and use the init functions in their init code.

Users must select AT91SAM926X_BOARD_INIT

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Reviewed-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>