mgmt: mcumgr: transport: uart: Change Kconfig to depends on

Changes CONFIG_MCUMGR_TRANSPORT_UART from selecting
CONFIG_UART_MCUMGR to instead of depending upon it, as it should
never have selected a driver Kconfig and instead always depended
upon it, and is needed for supporting different UART transports

Signed-off-by: Jamie McCrae <jamie.mccrae@nordicsemi.no>

samples/subsys/mgmt/mcumgr/smp_svr/cdc.conf

@@ -2,6 +2,7 @@
 CONFIG_SERIAL=y
 CONFIG_UART_LINE_CTRL=y
 CONFIG_CONSOLE=y
+CONFIG_UART_MCUMGR=y
 CONFIG_USB_DEVICE_STACK_NEXT=y
 CONFIG_CDC_ACM_SERIAL_INITIALIZE_AT_BOOT=y
 # USB backend is serial device

samples/subsys/mgmt/mcumgr/smp_svr/serial.conf

@@ -1,5 +1,6 @@
 # Enable the serial MCUmgr transport.
 CONFIG_BASE64=y
 CONFIG_CRC=y
+CONFIG_UART_MCUMGR=y
 CONFIG_MCUMGR_TRANSPORT_UART=y
 CONFIG_CONSOLE=y

subsys/mgmt/mcumgr/transport/Kconfig.uart

@@ -14,7 +14,7 @@ menuconfig MCUMGR_TRANSPORT_UART
 	depends on CONSOLE
 	depends on BASE64
 	depends on CRC
-	select UART_MCUMGR
+	depends on UART_MCUMGR
 	help
 	  Enables handling of SMP commands received over UART. This is a lightweight alternative
 	  to MCUMGR_TRANSPORT_SHELL. It allows MCUmgr commands to be received over UART without

tests/subsys/mgmt/mcumgr/all_options/other-options.conf

@@ -15,6 +15,7 @@ CONFIG_MCUMGR_GRP_OS_INFO_BUILD_DATE_TIME=y
 CONFIG_MCUMGR_GRP_SHELL_LEGACY_RC_RETURN_CODE=y
 CONFIG_MCUMGR_GRP_SETTINGS_BUFFER_TYPE_HEAP=y
 CONFIG_COMMON_LIBC_MALLOC_ARENA_SIZE=2048
+CONFIG_UART_MCUMGR=y
 CONFIG_MCUMGR_TRANSPORT_SHELL=n
 CONFIG_MCUMGR_TRANSPORT_UART=y
 CONFIG_MCUMGR_TRANSPORT_SHELL_INPUT_TIMEOUT=n