clocksource: ti-32k: make it depend on GENERIC_CLOCKSOURCE

the new ti 32k clocksource driver should depend on
GENERIC_CLOCKSOURCE because of its reliance on
sched_clock_register().

Let's enable that to avoid any possible build errors
and/or warnings on randbuilds.
Signed-off-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

drivers/clocksource/Kconfig

@@ -117,6 +117,7 @@ config CLKSRC_PISTACHIO
 
 config CLKSRC_TI_32K
 	bool "Texas Instruments 32.768 Hz Clocksource" if COMPILE_TEST
+	depends on GENERIC_SCHED_CLOCK
 	select CLKSRC_OF if OF
 	help
 	  This option enables support for Texas Instruments 32.768 Hz clocksource