defconfig: am43xx_evm: Enable DM_SPI and DM_SPI_FLASH

Commit 4c4e3b37("ARM: AM43xx: Enable FIT") accidentally disabled
DM_SPI and DM_SPI_FLASH. Add back DM_SPI and DM_SPI_FLASH to
am43xx_evm_defconfig in order to make use of DM framework for QSPI.

Signed-off-by: Vignesh R <vigneshr@ti.com>
Acked-by: Lokesh Vutla <lokeshvutla@ti.com>
Reviewed-by: Mugunthan V N <mugunthanvnm@ti.com>

configs/am43xx_evm_defconfig

@@ -51,6 +51,8 @@ CONFIG_SPI_FLASH_MACRONIX=y
 CONFIG_DM_ETH=y
 CONFIG_DM_SERIAL=y
 CONFIG_SYS_NS16550=y
+CONFIG_DM_SPI=y
+CONFIG_DM_SPI_FLASH=y
 CONFIG_TI_QSPI=y
 CONFIG_TIMER=y
 CONFIG_OMAP_TIMER=y

configs/am43xx_hs_evm_defconfig

@@ -52,6 +52,8 @@ CONFIG_SPI_FLASH_MACRONIX=y
 CONFIG_DM_ETH=y
 CONFIG_DM_SERIAL=y
 CONFIG_SYS_NS16550=y
+CONFIG_DM_SPI=y
+CONFIG_DM_SPI_FLASH=y
 CONFIG_TI_QSPI=y
 CONFIG_TIMER=y
 CONFIG_OMAP_TIMER=y