How to Patch DSDT

• Launch maciASL
• File -> New from ACPI -> DSDT
• Press Patch
• Select mainboard model patch (+others, if needed) then press Patch, Close
  
• Compile
• Save SDST.aml into /EFI/Clover/ACPI/patched
• Reboot

Useful patch repo (eg. for XHC instant wake issue): http://raw.github.com/RehabMan/Laptop-DSDT-Patch/master