Merge branch 'Enable-SFP-on-ACPI-based-systems'

Ruslan Babayev says:

====================
Enable SFP on ACPI based systems

Changes:
v2:
	- more descriptive commit body
v3:
	- made 'i2c_acpi_find_adapter_by_handle' static inline
v4:
	- don't initialize i2c_adapter to NULL. Instead see below...
	- handle the case of neither DT nor ACPI present as invalid.
	- alphabetical includes.
	- use has_acpi_companion().
	- use the same argument name in i2c_acpi_find_adapter_by_handle()
	  in both stubbed and non-stubbed cases.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>