arm: bcmbca: remove bcm63158 support under CONFIG_ARCH_BCM63158

Now that BCM63158 is supported under CONFIG_ARCH_BCMBCA and
CONFIG_BCM63158, remove the original ARCH_BCM63158 support and migrate
configuration settings.

Signed-off-by: William Zhang <william.zhang@broadcom.com>
Reviewed-by: Philippe Reynes <philippe.reynes@softathome.com>
9 files changed