ARM: mmc: fix NONREMOVABLE test in sdhci-bcm-kona

sdhci-bcm-kona driver is incorrectly doing "|" to bit-test
NONREMOVABLE. Switch to "&"

Signed-off-by: Christian Daudt <csd@broadcom.com>
Reviewed-by: Markus Mayer <markus.mayer@linaro.org>
Reviewed-by: Matt Porter <matt.porter@linaro.org>