clocksource/drivers/tcb_clksrc: Move Kconfig option

Move the ATMEL_TCB_CLKSRC option to drivers/clocksource and make it silent
if COMPILE_TEST is not selected.

Cc: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>

drivers/clocksource/Kconfig

@@ -410,6 +410,13 @@ config ATMEL_ST
 	help
 	  Support for the Atmel ST timer.
 
+config ATMEL_TCB_CLKSRC
+	bool "Atmel TC Block timer driver" if COMPILE_TEST
+	depends on HAS_IOMEM
+	select TIMER_OF if OF
+	help
+	  Support for Timer Counter Blocks on Atmel SoCs.
+
 config CLKSRC_EXYNOS_MCT
 	bool "Exynos multi core timer driver" if COMPILE_TEST
 	depends on ARM || ARM64

drivers/misc/Kconfig

@@ -59,20 +59,6 @@ config ATMEL_TCLIB
 	  blocks found on many Atmel processors.  This facilitates using
 	  these blocks by different drivers despite processor differences.
 
-config ATMEL_TCB_CLKSRC
-	bool "TC Block Clocksource"
-	depends on ARCH_AT91
-	select TIMER_OF if OF
-	default y
-	help
-	  Select this to get a high precision clocksource based on a
-	  TC block with a 5+ MHz base clock rate.  Two timer channels
-	  are combined to make a single 32-bit timer.
-
-	  When GENERIC_CLOCKEVENTS is defined, the third timer channel
-	  may be used as a clock event device supporting oneshot mode
-	  (delays of up to two seconds) based on the 32 KiHz clock.
-
 config DUMMY_IRQ
 	tristate "Dummy IRQ handler"
 	default n