parisc: add generic 32- and 64-bit defconfigs

New defconfigs which should be able to boot on any 32/64bit machine.
Many drivers are selected to be compiled-in to avoid the need for an
additional initrd and still being able to boot.

Signed-off-by: Helge Deller <deller@gmx.de>

diff --cc arch/parisc/configs/generic-32bit_defconfig
Simple merge

diff --cc arch/parisc/configs/generic-64bit_defconfig
Simple merge