Allow mac address to be set in smsc95xx

Signed-off-by: popcornmix <popcornmix@gmail.com>
RPi: lirc_rpi: Homebrew GPIO Port Receiver/Transmitter for the RaspberryPi
RPi: rtl8192cu: Realtek 8192C USB WiFi
RPi: mach-bcm2708: Broadcom BCM2708 Development Platform
RPi: dwc_otg: Synopsis DWC host support
RPi: vc_cma: Videocore CMA
RPi: vc04_services: Videocore VCHIQ
RPi: bcm2708-rng: BCM2708 generic true random number generator support
RPi: i2c-bcm2708: BCM2708 Broadcom Serial Controller
RPi: spi-bcm2708: BCM2708 SPI controller driver (SPI0)
RPi: bcm2708_fb: BCM2708 framebuffer support
RPi: sdhci-bcm2708: SDHCI support on BCM2708
RPi: bcm2708_wdog: Broadcom BCM2708 watchdog driver
RPi: snd_bcm2835: BCM2835 ALSA driver
RPi: bcm2835-cpufreq: BCM2835 Driver
RPi: bcm2835-thermal: BCM2835 Thermal Driver
RPi: bcm2835-hwmon: Broadcom BCM2835 HWMON Driver
RPi: defconfigs