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doing make install on an Ubuntu that is installed on an LVM will fail to
boot. Turns out that defconfig misses 2 device mapper related configs
for the Ubuntu initramfs.
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Reviewed-by: Steffen Maier <maier@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>