arm: bcm7445: Change serial console index

Change the configured serial console index to reflect that it is the
first physical UART, reorder some defconfig lines and move some
environment configuration from bcmstb.h to bcm7445.h.

Signed-off-by: Thomas Fitzsimmons <fitzsim@fitzsim.org>
Cc: Florian Fainelli <f.fainelli@gmail.com>
3 files changed