soc/mediatek: Move FLASH_DUAL_READ to common

FLASH_DUAL_READ is a common configuration for all MediaTek SoCs, so we
move it to common folder and select it in SoCs' Kconfig.

As suggested in CB:58837, we also rename FLASH_DUAL_READ to
FLASH_DUAL_IO_READ to reduce confusion.

TEST=build pass
BUG=b:233720142

Signed-off-by: Bo-Chen Chen <rex-bc.chen@mediatek.com>
Change-Id: If267a332519412a7919c5b7817047fabe4a564c8
Reviewed-on: https://review.coreboot.org/c/coreboot/+/65620
Reviewed-by: Yidi Lin <yidilin@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Yu-Ping Wu <yupingso@google.com>

0 files changed, 0 insertions, 0 deletions