x86: tsc: Move tsc_timer.c to drivers/timer

To group all dm timer drivers together, move tsc timer to
drivers/timer directory.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Acked-by: Simon Glass <sjg@chromium.org>
diff --git a/arch/x86/lib/Makefile b/arch/x86/lib/Makefile
index d676e2c..cd5ecb6 100644
--- a/arch/x86/lib/Makefile
+++ b/arch/x86/lib/Makefile
@@ -34,7 +34,6 @@
 obj-y	+= string.o
 obj-$(CONFIG_GENERATE_ACPI_TABLE) += acpi_table.o
 obj-y	+= tables.o
-obj-$(CONFIG_SYS_X86_TSC_TIMER)	+= tsc_timer.o
 obj-$(CONFIG_CMD_ZBOOT)	+= zimage.o
 obj-$(CONFIG_HAVE_FSP) += fsp/
 
diff --git a/drivers/timer/Kconfig b/drivers/timer/Kconfig
index 029af64..2b10d2b 100644
--- a/drivers/timer/Kconfig
+++ b/drivers/timer/Kconfig
@@ -23,4 +23,11 @@
 	  Select this to enable an emulated timer for sandbox. It gets
 	  time from host os.
 
+config X86_TSC_TIMER
+	bool "x86 Time-Stamp Counter (TSC) timer support"
+	depends on TIMER && X86
+	default y if X86
+	help
+	  Select this to enable Time-Stamp Counter (TSC) timer for x86.
+
 endmenu
diff --git a/drivers/timer/Makefile b/drivers/timer/Makefile
index 300946e..fe954eca 100644
--- a/drivers/timer/Makefile
+++ b/drivers/timer/Makefile
@@ -7,3 +7,4 @@
 obj-$(CONFIG_TIMER)		+= timer-uclass.o
 obj-$(CONFIG_ALTERA_TIMER)	+= altera_timer.o
 obj-$(CONFIG_SANDBOX_TIMER)	+= sandbox_timer.o
+obj-$(CONFIG_X86_TSC_TIMER)	+= tsc_timer.o
diff --git a/arch/x86/lib/tsc_timer.c b/drivers/timer/tsc_timer.c
similarity index 100%
rename from arch/x86/lib/tsc_timer.c
rename to drivers/timer/tsc_timer.c
diff --git a/include/configs/x86-common.h b/include/configs/x86-common.h
index 65d50ca..70ec103 100644
--- a/include/configs/x86-common.h
+++ b/include/configs/x86-common.h
@@ -152,8 +152,6 @@
  * CPU Features
  */
 
-#define CONFIG_SYS_X86_TSC_TIMER
-
 #define CONFIG_SYS_STACK_SIZE			(32 * 1024)
 #define CONFIG_SYS_MONITOR_BASE		CONFIG_SYS_TEXT_BASE
 #define CONFIG_SYS_MALLOC_LEN			0x200000