AT91 SoCs have a memory range reserved for internal bus configuration.
Expose those registers so that drivers can make use of the matrix syscon
declared in at91 DTs.
Signed-off-by: NBoris Brezillon <boris.brezillon@free-electrons.com>
Acked-by: NLee Jones <lee.jones@linaro.org>
Signed-off-by: NNicolas Ferre <nicolas.ferre@atmel.com>