sky2: Refactor down/up code out of sky2_restart()
sky2: Refactor down/up code out of sky2_restart()

Code to bring down all sky2 interfaces and bring it up
again can be reused in sky2_suspend and sky2_resume.

Factor the code to bring the interfaces down into
sky2_all_down and the up code into sky2_all_up.

Signed-off-by: Mike McCormack <fa77123c115913ca9e97c82fc48a0b47e477b7b4@ring3k.org>
Acked-by: Stephen Hemminger <a072e933f45880fe04500ea083d5c7f6e81a06f0@vyatta.com>
Signed-off-by: David S. Miller <fe08d3c717adf2ae63592e4c9aec6e3e404d8e3e@davemloft.net>

TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs