bcm2835_mu_serial: Convert to Kconfig

Setting config options using headers is deprecated. This patch converts
the BCM2835 Mini-UART to Kconfig.
Signed-off-by: NAlexander Graf <agraf@suse.de>

drivers/serial/Kconfig

@@ -388,6 +388,13 @@ config ATMEL_USART
 	  configured in the device tree, and input clock frequency can
 	  be got from the clk node.
 
+config BCM283X_MU_SERIAL
+	bool "Support for BCM283x Mini-UART"
+	depends on DM_SERIAL && ARCH_BCM283X
+	default y
+	help
+	  Select this to enable Mini-UART support on BCM283X family of SoCs.
+
 config BCM6345_SERIAL
 	bool "Support for BCM6345 UART"
 	depends on DM_SERIAL && ARCH_BMIPS

include/configs/rpi.h

@@ -75,9 +75,6 @@
 #define CONFIG_MISC_INIT_R
 #endif
 
-/* Console UART, can be configured dynamically in config.txt */
-#define CONFIG_BCM283X_MU_SERIAL
-
 /* Console configuration */
 #define CONFIG_SYS_CBSIZE		1024
 

scripts/config_whitelist.txt

@@ -121,7 +121,6 @@ CONFIG_BCH_CONST_M
 CONFIG_BCH_CONST_PARAMS
 CONFIG_BCH_CONST_T
 CONFIG_BCM2835_GPIO
-CONFIG_BCM283X_MU_SERIAL
 CONFIG_BIOSEMU
 CONFIG_BITBANGMII_MULTI
 CONFIG_BL1_OFFSET