i2c: update i2c supported functions query for 64-bit
i2c: update i2c supported functions query for 64-bit

Update to change supported_funcs to unsigned long to support 64 bit
builds.  Without this change, the value of supported_funcs is 0 even
though the correct value for the device I tested with is fff8009.

Signed-off-by: Jared Bents <7b609138cd4e0701deac4259c59e6d92c0fe4630@rockwellcollins.com>
Signed-off-by: Vanya A. Sergeev <7a38d8cbd20d9932ba948efaa364bb62651d5ad4@sergeev.io>

vsergeev/c-periphery