spi: Enable missing CONFIG_SPL_DM_SPI support

Due to how the Makefile logic is we currently get DM_SPI support in SPL
enabled by having DM_SPI enabled for full U-Boot but not having
CONFIG_SPL_DM_SPI set.  Add this missing option to boards that were
inadvertently making use of it.

Cc: Adam Ford <aford173@gmail.com>
Cc: Akash Gajjar <akash@openedev.com>
Cc: Anatolij Gustschin <agust@denx.de>
Cc: Andy Yan <andy.yan@rock-chips.com>
Cc: Anup Patel <anup.patel@wdc.com>
Cc: Atish Patra <atish.patra@wdc.com>
Cc: Bin Meng <bmeng.cn@gmail.com>
Cc: Chee Hong Ang <chee.hong.ang@intel.com>
Cc: Chin-Liang See <clsee@altera.com>
Cc: Dalon Westergreen <dwesterg@gmail.com>
Cc: Dinh Nguyen <dinguyen@kernel.org>
Cc: Eugen Hristev <eugen.hristev@microchip.com>
Cc: Hannes Schmelzer <hannes.schmelzer@br-automation.com>
Cc: Heiko Schocher <hs@denx.de>
Cc: Jagan Teki <jagan@amarulasolutions.com>
Cc: Klaus Goger <klaus.goger@theobroma-systems.com>
Cc: Levin Du <djw@t-chip.com.cn>
Cc: Ley Foon Tan <ley.foon.tan@intel.com>
Cc: Lokesh Vutla <lokeshvutla@ti.com>
Cc: Luca Ceresoli <luca@lucaceresoli.net>
Cc: Marek Vasut <marex@denx.de>
Cc: Michal Simek <monstr@monstr.eu>
Cc: Mike Looijmans <mike.looijmans@topic.nl>
Cc: Nicolas Ferre <nicolas.ferre@microchip.com>
Cc: Nikita Kiryanov <nikita@compulab.co.il>
Cc: Palmer Dabbelt <palmer@dabbelt.com>
Cc: Patrick Delaunay <patrick.delaunay@st.com>
Cc: Paul Walmsley <paul.walmsley@sifive.com>
Cc: Pavel Machek <pavel@denx.de>
Cc: Peter Robinson <pbrobinson@gmail.com>
Cc: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
Cc: Simon Glass <sjg@chromium.org>
Cc: Stefan Roese <sr@denx.de>
Cc: Suniel Mahesh <sunil@amarulasolutions.com>
Cc: Vitaly Andrianov <vitalya@ti.com>
Cc: Wolfgang Grandegger <wg@aries-embedded.de>
Signed-off-by: Tom Rini <trini@konsulko.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Luca Ceresoli <luca@lucaceresoli.net>
diff --git a/configs/cm_t43_defconfig b/configs/cm_t43_defconfig
index 94b051a..4232aac 100644
--- a/configs/cm_t43_defconfig
+++ b/configs/cm_t43_defconfig
@@ -8,6 +8,7 @@
 CONFIG_ENV_SECT_SIZE=0x10000
 CONFIG_SYS_SPI_U_BOOT_OFFS=0x40000
 CONFIG_DM_GPIO=y
+CONFIG_SPL_DM_SPI=y
 CONFIG_AM43XX=y
 CONFIG_TARGET_CM_T43=y
 CONFIG_SPL_MMC_SUPPORT=y