Include USB HID support whenever the kernel supports it

The check for /sys/bus/usb can fail also if none of the USB modules is
loaded when generating the initrd. This does not mean that USB HID
cannot be used in the emergency shell during boot.

References: bnc#879502
Signed-off-by: Michal Marek <mmarek@suse.cz>
Merge branch 'bnc879502' into SLE11-SP3
setup-mount: Check for both nfs and nfs4

References: bnc#881550
Signed-off-by: Michal Marek <mmarek@suse.cz>
setup-storage: Fix matching of device numbers in /proc/partitions

References: bnc#887683
Signed-off-by: Michal Marek <mmarek@suse.cz>