MIPS: defconfigs: add MTD_SPI_NOR (new dependency for M25P80)

These defconfigs contain the CONFIG_M25P80 symbol, which is now
dependent on the MTD_SPI_NOR symbol. Add CONFIG_MTD_SPI_NOR to satisfy
the new dependency.

At the same time, drop the now-nonexistent CONFIG_MTD_CHAR symbol.

Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Cc: Huang Shijie <b32955@freescale.com>
Cc: Marek Vasut <marex@denx.de>
Cc: linux-mtd@lists.infradead.org
Patchwork: https://patchwork.linux-mips.org/patch/6878/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
diff --git a/arch/mips/configs/rt305x_defconfig b/arch/mips/configs/rt305x_defconfig
index d1741bc..d14ae2f 100644
--- a/arch/mips/configs/rt305x_defconfig
+++ b/arch/mips/configs/rt305x_defconfig
@@ -81,7 +81,6 @@
 # CONFIG_FIRMWARE_IN_KERNEL is not set
 CONFIG_MTD=y
 CONFIG_MTD_CMDLINE_PARTS=y
-CONFIG_MTD_CHAR=y
 CONFIG_MTD_BLOCK=y
 CONFIG_MTD_CFI=y
 CONFIG_MTD_CFI_AMDSTD=y
@@ -89,6 +88,7 @@
 CONFIG_MTD_PHYSMAP=y
 CONFIG_MTD_PHYSMAP_OF=y
 CONFIG_MTD_M25P80=y
+CONFIG_MTD_SPI_NOR=y
 CONFIG_EEPROM_93CX6=m
 CONFIG_SCSI=y
 CONFIG_BLK_DEV_SD=y