linux-phytec-fsl

ARM: dts: at91: Fix matrix compatible

The matrix node was defined before the documentation for the bus
matrix configuration was submitted. Patch the device tree to match
the DT doc.

Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>