STMMAC Timer optimisation

configname: CONFIG_STMMAC_TIMER

Linux Kernel Configuration
└─>Device Drivers
└─>Network device support
└─>Ethernet (1000 Mbit)
└─>STMMAC Timer optimisation
In linux kernel since version 2.6.32 (release Date: 2009-12-02)  
Use an external timer for mitigating the number of network
interrupts. Currently, for SH architectures, it is possible
to use the TMU channel 2 and the SH-RTC device.