[S] Change in coreboot[main]: drivers/aspeed/common: Add AST2600 support

[Angel Pons (Code Review)]

Attention is currently required from: Patrick Rudolph, Shuo Liu.

Angel Pons has posted comments on this change by Patrick Rudolph. ( https://review.coreboot.org/c/coreboot/+/84425?usp=email )

Change subject: drivers/aspeed/common: Add AST2600 support
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Patch Set 2: Code-Review+1

(2 comments)

File src/drivers/aspeed/common/ast_main.c:

https://review.coreboot.org/c/coreboot/+/84425/comment/8cabccb9_3a7860b1?usp... :
PS2, Line 200: AST2500
This change shouldn't matter when adding support for the AST2600

File src/drivers/aspeed/common/ast_mode.c:

https://review.coreboot.org/c/coreboot/+/84425/comment/48391565_783fb7cf?usp... :
PS2, Line 295: 		ast_set_index_reg_mask(ast, AST_IO_CRTC_PORT, 0xFC, 0xFD, 0x00);
Does this need to be done on non-AST2600 chips?