Move console.c to pl011 specific driver location

Rename drivers/console/console.c to
drivers/arm/peripherals/pl011/pl011_console.c. This makes it clear
that this is a pl011 specific console implementation.

Fixes ARM-software/tf-issues#129

Change-Id: Ie2f8109602134c5b86993e32452c70734c45a3ed
Remove redundant code from bl1_plat_helpers.S

Remove redundant code in plat_secondary_cold_boot_setup() in
plat/fvp/aarch64/bl1_plat_helpers.S.

Fixes ARM-software/tf-issues#136

Change-Id: I98c0a46d95cfea33125e34e609c83dc2c97cd86e
Merge pull request #44 from danh-arm/dh/tf-issues#136

Remove redundant code from bl1_plat_helpers.S
Merge pull request #43 from danh-arm/dh/tf-issues#129

Move console.c to pl011 specific driver location