kernel-modules: Fix storage module selection for sdhci/mmc/ahci

Currently the block driver detection for generic initrd doesn't include
the SD/MMC drivers so we fail to boot generic images on any device using
those platforms as boot devices when using a generic initrd. Add logic
to detect those modules. This primarily fixes embedded ARM devices but
also likely intel tablets/dev boards and enterprise hypervisors that
have the ability to boot from SD.

Also the ahci_init_controller misses a number of drivers that use the
libahci_platform module for the init so this fixes some missing achi
moduless too.

Finally it cleans up the ARM storage module hacks that the above now
deals with in a more generic manner.

Signed-off-by: <pbrobinson@gmail.com>
bonding: use hwaddr of the slave rather than the master

When a bonded interface is brought up, any slaves included in the bond
have their hardware address set to that of the bond master.  Although
this allows an interface to be brought up on start up, when the
configuration file is imported into the booted system it prevents
the bonded interface being successfully restarted.

The fix involves obtaining the hardware address of the slaves before
they are added to the bond and then using this value in the
configuration file.
network/ifup.sh: Don't try to modprobe ipv6, if already available

Signed-off-by: Vasiliy Tolstov <v.tolstov@selfip.ru>

[Edited-by: Harald Hoyer]
Simplified logic.