This patch adds support for the bcm43340 and bcm43341 wireless
chipsets. These two chipsets are identical from wireless parts
perspective. As such they use the same firmware image.

Cc: Samuel Ortiz <sameo@linux.intel.com>
Cc: Rob Herring <rob.herring@linaro.org>
Signed-off-by: John Stultz <john.stultz@linaro.org>
[arend@broadcom.com: squash to single commit, remove 43341 chipid]
Reviewed-by: Pieter-Paul Giesberts <pieterpg@broadcom.com>
Reviewed-by: Hante Meuleman <meuleman@broadcom.com>
Signed-off-by: Arend van Spriel <arend@broadcom.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>