network-setup: rename network-setup and serial-number

rename network-setup to hipos-network-setup
rename serial-number to hipos-serial-number

Signed-off-by: Eik Binschek <binschek@dresearch-fe.de>
Merge branch 'next' of github.com:DFE/HIPOS into next

Signed-off-by: Eik Binschek <binschek@dresearch-fe.de>

Conflicts:
	meta-hipos/recipes-image/hydraip/hydraip-image.inc