thum/ast2050-flashrom: Modified flashrom sources to support the Aspeed AST2050 / AST2400

thum 7a353eaa04 Adding backup from https://github.com/raptor-engineering/ast2050-yocto-openbmc		5 lat temu
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mysteries_intel.txt	7a353eaa04 Adding backup from https://github.com/raptor-engineering/ast2050-yocto-openbmc	5 lat temu
serprog-protocol.txt	7a353eaa04 Adding backup from https://github.com/raptor-engineering/ast2050-yocto-openbmc	5 lat temu