move serial driver stuff

target/linux/config/Config.in.serial

@@ -41,11 +41,13 @@ config ADK_KERNEL_SERIAL_8250
 		|| ADK_TARGET_SYSTEM_PCENGINES_APU \
 		|| ADK_TARGET_SYSTEM_PCENGINES_ALIX \
 		|| ADK_TARGET_SYSTEM_QEMU_OR1K \
+		|| ADK_TARGET_SYSTEM_IBM_X40 \
 		|| ADK_TARGET_SYSTEM_MIKROTIK_RB532
 	default y if ADK_TARGET_SYSTEM_XILINX_KINTEX7
 	default y if ADK_TARGET_SYSTEM_PCENGINES_APU
 	default y if ADK_TARGET_SYSTEM_PCENGINES_ALIX
 	default y if ADK_TARGET_SYSTEM_QEMU_OR1K
+	default y if ADK_TARGET_SYSTEM_IBM_X40
 	default y if ADK_TARGET_SYSTEM_MIKROTIK_RB532
 	default n
 	help

target/x86/kernel/ibm-x40

@@ -5,6 +5,5 @@ CONFIG_CPU_SUP_INTEL=y
 CONFIG_NR_CPUS=1
 CONFIG_VM86=y
 CONFIG_X86_REBOOTFIXUPS=y
-CONFIG_SERIAL_8250=y
-CONFIG_SERIAL_8250_CONSOLE=y
 CONFIG_FIX_EARLYCON_MEM=y
+CONFIG_CMDLINE_BOOL=y

target/x86/systems/ibm-x40

@@ -6,6 +6,7 @@ config ADK_TARGET_SYSTEM_IBM_X40
 	select ADK_TARGET_CPU_WITH_SSE2
 	select ADK_TARGET_CPU_WITH_MTRR
 	select ADK_TARGET_WITH_VGA
+	select ADK_TARGET_WITH_SERIAL
 	select ADK_TARGET_WITH_CPU_FREQ
 	select ADK_TARGET_WITH_USB_BOOT
 	select ADK_TARGET_WITH_CARDBUS