spi: Add compatible string for brcmstb SoCs

Add compatible string for brcmstb 7445 SoCs.

Signed-off-by: Ray Jui <ray.jui@broadcom.com>
Acked-by: Florian Fainelli <f.fainelli@gmail.com>
Link: https://lore.kernel.org/r/20200910152539.45584-1-ray.jui@broadcom.com
Signed-off-by: Mark Brown <broonie@kernel.org>
1 file changed