clocksource/drivers: Rename CLKSRC_OF to TIMER_OF

The config option name is now renamed to 'TIMER_OF' for consistency with
the CLOCKSOURCE_OF_DECLARE => TIMER_OF_DECLARE change.

Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
diff --git a/arch/microblaze/Kconfig b/arch/microblaze/Kconfig
index 85885a50..8e47121 100644
--- a/arch/microblaze/Kconfig
+++ b/arch/microblaze/Kconfig
@@ -4,7 +4,7 @@
 	select ARCH_MIGHT_HAVE_PC_PARPORT
 	select ARCH_WANT_IPC_PARSE_VERSION
 	select BUILDTIME_EXTABLE_SORT
-	select CLKSRC_OF
+	select TIMER_OF
 	select CLONE_BACKWARDS3
 	select COMMON_CLK
 	select GENERIC_ATOMIC64