serial: sh_sci: remove HAVE_CLK build dependecy

Since 93abe8e4 (clk: add non CONFIG_HAVE_CLK routines) code using clk.h
like this driver needs not depend on HAVE_CLK.

Signed-off-by: Baruch Siach <baruch@tkos.co.il>
Acked-by: Simon Horman <horms+renesas@verge.net.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/tty/serial/Kconfig

@@ -708,7 +708,6 @@ config SERIAL_IP22_ZILOG_CONSOLE
 
 config SERIAL_SH_SCI
 	tristate "SuperH SCI(F) serial port support"
-	depends on HAVE_CLK
 	depends on SUPERH || ARCH_SHMOBILE || COMPILE_TEST
 	select SERIAL_CORE