arm: bcm7xxx: Convert to DM_SERIAL
Remove ns16550 configuration from header files. Document
DM_SERIAL-required prior stage device tree configuration.
diff --git a/configs/bcm7445_defconfig b/configs/bcm7445_defconfig
index 81433b0..f5f1e8d 100644
--- a/configs/bcm7445_defconfig
+++ b/configs/bcm7445_defconfig
@@ -44,8 +44,8 @@
CONFIG_DM_SPI_FLASH=y
CONFIG_SPI_FLASH_MACRONIX=y
CONFIG_SPI_FLASH_STMICRO=y
-CONFIG_SYS_NS16550_SERIAL=y
-CONFIG_SYS_NS16550_REG_SIZE=-4
+CONFIG_DM_SERIAL=y
+CONFIG_SYS_NS16550=y
CONFIG_SPI=y
CONFIG_DM_SPI=y
CONFIG_BCMSTB_SPI=y