`deriveAutoReg` fails on newer GHC version

[rowanG077]

It fails due to the name of GHC.TypeNats.KnownNat being changed to GHC.Internal.TypeNats.KnownNat while it's hardcoded in deriveAutoReg, which gives the error:

Missing instance GHC.Internal.TypeNats.KnownNat (Protocols.MsgDataLen cfg_0)

clash-compiler/clash-prelude/src/Clash/Class/AutoReg/Internal.hs

Lines 348 to 354 in ae0460f

	constraintsWantedFor :: Name -> [Type] -> Q Cxt
	constraintsWantedFor clsNm tys
	| show clsNm == "GHC.TypeNats.KnownNat" = do
	-- KnownNat is special, you can't just lookup instances with reifyInstances.
	-- So we just pass KnownNat constraints.
	-- This will most likely require UndecidableInstances.
	return [conAppsT clsNm tys]