powerpc: Update desktop/server defconfigs
Paul Mackerras authored

Turned off CONFIG_PCI_LEGACY and turned on EXT4, and otherwise mostly
took the defaults.  This also updates ppc6xx_defconfig, which covers
the 6xx/7xx/7xxx-based embedded boards.
Signed-off-by: default avatarPaul Mackerras <paulus@samba.org>
cb8fdc69