coreboot configs: disable serial output during coreboot initialization

resources/coreboot/kfsn4-dre_2mb/config/libgfxinit_txtmode

@@ -89,7 +89,6 @@ CONFIG_MAINBOARD_DIR="asus/kfsn4-dre"
 CONFIG_MAINBOARD_PART_NUMBER="KFSN4-DRE"
 CONFIG_MAX_CPUS=12
 CONFIG_CBFS_SIZE=0x200000
-CONFIG_UART_FOR_CONSOLE=0
 CONFIG_MAINBOARD_VENDOR="ASUS"
 CONFIG_APIC_ID_OFFSET=0x0
 CONFIG_HW_MEM_HOLE_SIZEK=0x100000
@@ -147,7 +146,7 @@ CONFIG_FMDFILE=""
 CONFIG_MMCONF_BASE_ADDRESS=0xc0000000
 CONFIG_POST_DEVICE=y
 CONFIG_DRIVERS_INTEL_WIFI=y
-CONFIG_DRIVERS_UART_8250IO=y
+# CONFIG_DRIVERS_UART_8250IO is not set
 CONFIG_DIMM_MAX=4
 CONFIG_MAINBOARD_SMBIOS_PRODUCT_NAME="KFSN4-DRE"
 CONFIG_DEFAULT_CONSOLE_LOGLEVEL=0
@@ -213,9 +212,7 @@ CONFIG_VERSTAGE_ADDR=0x2000000
 CONFIG_PCIEXP_ASPM=y
 CONFIG_PCIEXP_COMMON_CLOCK=y
 CONFIG_PCIEXP_CLK_PM=y
-CONFIG_TTYS0_BASE=0x3f8
 CONFIG_HPET_MIN_TICKS=0xfa
-CONFIG_TTYS0_LCS=3
 CONFIG_UART_PCI_ADDR=0x0
 # CONFIG_SOC_MEDIATEK_MT8173 is not set
 # CONFIG_SOC_MEDIATEK_MT8183 is not set
@@ -445,8 +442,6 @@ CONFIG_CRB_TPM_BASE_ADDRESS=0xfed40000
 # CONFIG_SPI_FLASH is not set
 # CONFIG_SPI_SDCARD is not set
 # CONFIG_HAVE_SPI_CONSOLE_SUPPORT is not set
-CONFIG_DRIVERS_UART=y
-# CONFIG_DRIVERS_UART_8250IO_SKIP_INIT is not set
 # CONFIG_NO_UART_ON_SUPERIO is not set
 # CONFIG_UART_OVERRIDE_INPUT_CLOCK_DIVIDER is not set
 # CONFIG_UART_OVERRIDE_REFCLK is not set
@@ -538,28 +533,19 @@ CONFIG_BOOT_DEVICE_MEMORY_MAPPED=y
 # Console
 #
 CONFIG_SQUELCH_EARLY_SMP=y
-CONFIG_CONSOLE_SERIAL=y
-
-#
-# I/O mapped, 8250-compatible
-#
-
-#
-# Serial port base address = 0x3f8
-#
 # CONFIG_CONSOLE_SERIAL_921600 is not set
 # CONFIG_CONSOLE_SERIAL_460800 is not set
 # CONFIG_CONSOLE_SERIAL_230400 is not set
-CONFIG_CONSOLE_SERIAL_115200=y
+# CONFIG_CONSOLE_SERIAL_115200 is not set
 # CONFIG_CONSOLE_SERIAL_57600 is not set
 # CONFIG_CONSOLE_SERIAL_38400 is not set
 # CONFIG_CONSOLE_SERIAL_19200 is not set
 # CONFIG_CONSOLE_SERIAL_9600 is not set
-CONFIG_TTYS0_BAUD=115200
 # CONFIG_SPKMODEM is not set
 # CONFIG_CONSOLE_NE2K is not set
 CONFIG_CONSOLE_CBMEM=y
 CONFIG_CONSOLE_CBMEM_BUFFER_SIZE=0x20000
+# CONFIG_CONSOLE_CBMEM_DUMP_TO_UART is not set
 # CONFIG_CONSOLE_SPI_FLASH is not set
 # CONFIG_DEFAULT_CONSOLE_LOGLEVEL_8 is not set
 # CONFIG_DEFAULT_CONSOLE_LOGLEVEL_7 is not set
@@ -647,7 +633,6 @@ CONFIG_HAVE_DEBUG_CAR=y
 #
 # General Debug Settings
 #
-# CONFIG_GDB_STUB is not set
 # CONFIG_FATAL_ASSERTS is not set
 # CONFIG_DEBUG_CBFS is not set
 CONFIG_HAVE_DEBUG_RAM_SETUP=y