Release v4.4.30-openpower1

Since 4.4.27-openpower1 there were a number of possibly relevant fixes:

PowerPC fixes:
  * cccc670b5137 powerpc/nvram: Fix an incorrect partition merge
  * c346241e752a powerpc/mm: Prevent unlikely crash in copro_calculate_slb()
  * b57af607da42 powerpc/pseries: Fix stack corruption in htpe code
  * 800b55c471c2 powerpc/64: Fix incorrect return value from __copy_tofrom_user
  * 8f7929ce0c85 powerpc/powernv: Use CPU-endian PEST in pnv_pci_dump_p7ioc_diag_data()
  * 450a3ad86695 powerpc/powernv: Use CPU-endian hub diag-data type in pnv_eeh_get_and_dump_hub_diag()
  * f0a933ef4462 powerpc/powernv: Pass CPU-endian PE number to opal_pci_eeh_freeze_clear()
  * 74c770181558 powerpc/vdso64: Use double word compare on pointers

Driver fixes:
  * 70c66946ef35 net/mlx4_core: Allow resetting VF admin mac to zero
  * 6896b3dd2da5 bnx2x: Prevent false warning for lack of FC NPIV

Signed-off-by: Joel Stanley <joel@jms.id.au>
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