A handful of DT updates from Christian Daudt for the broadcom mobile
platforms, including their rename of the platform to BCM_MOBILE to keep
BCM for the vendor-level options.

* bcm/dt:
  ARM: dts: bcm11351: Use GIC/IRQ defines for sdio interrupts
  ARM: dts: bcm: Add missing UARTs for bcm11351 (bcm281xx)
  ARM: dts: bcm281xx: Add card detect GPIO
  ARM: dts: rename ARCH_BCM to ARCH_BCM_MOBILE (dt)
  ARM: bcm281xx: Add device node for the GPIO controller
Signed-off-by: Olof Johansson <olof@lixom.net>