Just for clarification.
After injecting CPUType = 0x0606 in Clover, i5-5200U could be recognized as
Core i5 with proper frequency in "About this Mac", otherwise showing
Unknown in Processor part.
Still no cpu power management, and ACPI_SMC_Platform.kext was still loaded.
After we used a modified version of ssdtPRGen script to generate SSDT.aml, X86Platform.kext and X86PlatformShim.kext are loaded, and
IOPPF: XCPM Mode message was shown in console.
I added Broadwell's CPUs information and Apple's new Board-IDs to ssdtPRGen script, so I think CPU power management should be fine.
But, yeah, Clover needs an update to inject "proper" cpu type.