Experimental Kernel Build for Sharp Zaurus C3x00

• Added PXA2xx cpufreq
• Added voltage regulator ISL6271A support
• Added some new 4.2.3 USB WiFi drivers
• Changed Kernel compression from LZO to LZ4 (bigger kernel but faster boot)
• Optimized CCFLAGS for kernel build to tune=xscale

http://www.oesf.org/forum/index.php?showforum=167