kernel: add module support Solarflare network adapter

kernel: add module support Solarflare network adapter

According to Solarflare user guide
it is recommended to install lm-sensors and
use the following command to obtain adapter health info

$ sensors | grep sfc
sfc pci 0400
sfc pci 0401

$ sensors sfc pci 0400
sfc pci 0400
Adapter: PCI adapter
1.2V supply:                        N/A
3.3V supply:                    +3.22 V  (min =  +3.00 V, max =  +3.60 V)
12.0V supply:                  +12.14 V  (min = +11.04 V, max = +12.96 V)
0.9V supply (ext. ADC):         +1.03 V  (min =  +0.50 V, max =  +1.10 V)
                                         (crit max =  +1.15 V)
0.9V phase A supply:                N/A
PHY overcurrent:                    N/A
ERROR: Can't get value of subfeature temp1_alarm: Can't read
PHY temp.:                          N/A
AOE FPGA temp.:                 +68.0°C  (low  =  +0.0°C, high = +95.0°C)
                                         (crit = +105.0°C)
Ambient temp.:                  +56.0°C  (low  =  +0.0°C, high = +75.0°C)
                                         (crit = +85.0°C)
Controller die (TDIODE) temp.:  +77.0°C  (low  =  +0.0°C, high = +95.0°C)
                                         (crit = +105.0°C)
Board front temp.:              +59.0°C  (low  =  +0.0°C, high = +75.0°C)
                                         (crit = +85.0°C)
Board back temp.:               +62.0°C  (low  =  +0.0°C, high = +75.0°C)
                                         (crit = +85.0°C)
1.2V supply current:                N/A
0.9V phase A supply current:        N/A
3.3V supply current:                N/A
12V supply current:                 N/A

Signed-off-by: Tan Zien <nabsdh9@gmail.com>