cc/gcc: do not print multilib for canadian-cross

Previous import from patchwork missed one hunk (in cset #d8feb93b3e49)
Apply it now.

Signed-off-by: "David Holsgrove" <david.holsgrove@xilinx.com>
Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Patchwork-Id: 189053

# Alpha specific configuration file

## select ARCH_SUPPORTS_32

## select ARCH_DEFAULT_32

## select ARCH_USE_MMU

## select ARCH_SUPPORTS_WITH_CPU

## select ARCH_SUPPORTS_WITH_TUNE

##

## help The Alpha architecture.