Change in coreboot[master]: mb/amd/majolica: Add eSPI support

[Bao Zheng (Code Review)]

Attention is currently required from: Jason Glenesk, Raul Rangel, Marshall Dawson, Zheng Bao, Felix Held.
Bao Zheng has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/49966 )

Change subject: mb/amd/majolica: Add eSPI support
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Patch Set 8:

(2 comments)

File src/mainboard/amd/majolica/devicetree.cb:

https://review.coreboot.org/c/coreboot/+/49966/comment/39f8cba7_95efbf27 
PS4, Line 5: 		.std_io_decode_bitmap = ESPI_DECODE_IO_0X60_0X64_EN,
> even though the post code display doesn't work yet, i'd still add the port 80 espi decode here

Done

https://review.coreboot.org/c/coreboot/+/49966/comment/4f9ea29d_893c6005 
PS4, Line 6: .generic_io_range[0] = {
           : 			.base = 0x662,
           : 			.size = 8,
           : 		},
> is this currently needed? not sure what this is for exactly

Done