sky2: Refactor sky2_get_regs into two functions
sky2: Refactor sky2_get_regs into two functions

Separate code deciding which registers can be accessed out of
sky2_get_regs in preparation for adding more conditions into it.

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

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