MIPS: Update cavium_octeon_defconfig

The serial port changes make it advisable to enable the proper UART
drivers.
Signed-off-by: David Daney <david.daney@cavium.com>
Cc: linux-mips@linux-mips.org
Cc: Jamie Iles <jamie@jamieiles.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Jiri Slaby <jslaby@suse.cz>
Cc: linux-serial@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/5518/Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

arch/mips/configs/cavium_octeon_defconfig

 CONFIG_CAVIUM_OCTEON_SOC=y
 CONFIG_CAVIUM_CN63XXP1=y
 CONFIG_CAVIUM_OCTEON_CVMSEG_SIZE=2
-CONFIG_SPARSEMEM_MANUAL=y
 CONFIG_TRANSPARENT_HUGEPAGE=y
 CONFIG_SMP=y
 CONFIG_NR_CPUS=32
 CONFIG_HZ_100=y
 CONFIG_PREEMPT=y
-CONFIG_EXPERIMENTAL=y
 CONFIG_SYSVIPC=y
 CONFIG_POSIX_MQUEUE=y
 CONFIG_BSD_PROCESS_ACCT=y
@@ -50,7 +48,6 @@ CONFIG_UEVENT_HELPER_PATH="/sbin/hotplug"
 # CONFIG_FW_LOADER is not set
 CONFIG_MTD=y
 # CONFIG_MTD_OF_PARTS is not set
-CONFIG_MTD_CHAR=y
 CONFIG_MTD_BLOCK=y
 CONFIG_MTD_CFI=y
 CONFIG_MTD_CFI_AMDSTD=y
@@ -114,6 +111,7 @@ CONFIG_SERIAL_8250=y
 CONFIG_SERIAL_8250_CONSOLE=y
 CONFIG_SERIAL_8250_NR_UARTS=2
 CONFIG_SERIAL_8250_RUNTIME_UARTS=2
+CONFIG_SERIAL_8250_DW=y
 # CONFIG_HW_RANDOM is not set
 CONFIG_I2C=y
 CONFIG_I2C_OCTEON=y