Input: amikbd - fix build if !CONFIG_HW_CONSOLE

If CONFIG_HW_CONSOLE is not set:

drivers/built-in.o: In function `amikbd_probe':
amikbd.c:(.init.text+0x3e4e): undefined reference to `key_maps'
amikbd.c:(.init.text+0x3dd4): undefined reference to `key_maps'

To fix this, extract the initialization of the console keyboard maps
into amikbd_init_console_keymaps(), protected by #ifdef
CONFIG_HW_CONSOLE.

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>