[S] Change in coreboot[main]: mb/google/brya: Create a tivviks variant

[Subrata Banik (Code Review)]

Attention is currently required from: Dinesh Gehlot, Eric Lai, Kapil Porwal, Nick Vaccaro, V Sowmya.

Subrata Banik has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/81262?usp=email )

Change subject: mb/google/brya: Create a tivviks variant
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Patch Set 1: -Code-Review

(1 comment)

File src/mainboard/google/brya/Kconfig:

https://review.coreboot.org/c/coreboot/+/81262/comment/d176e7e3_80a964d3 :
PS1, Line 464: 	select BOARD_ROMSIZE_KB_32768
             : 	select DRIVERS_GENERIC_GPIO_KEYS
             : 	select DRIVERS_GENESYSLOGIC_GL9750
             : 	select DRIVERS_I2C_SX9324
             : 	select DRIVERS_I2C_SX9324_SUPPORT_LEGACY_LINUX_DRIVER
             : 	select DRIVERS_INTEL_MIPI_CAMERA
             : 	select HAVE_WWAN_POWER_SEQUENCE
             : 	select INTEL_GMA_HAVE_VBT
why not something like this

```
config BOARD_GOOGLE_TIVVIKS
    select BOARD_GOOGLE_NIVVIKS
    select SOC_INTEL_TWINLAKE
```