drivers/clocksource/Kconfig: Let SH_TIMER_CMT depend on HAS_IOMEM

SH_TIMER_CMT will use IO memory features which needs HAS_IOMEM, so need depend on it. One of the related error (with allmodconfig under um):

CC drivers/clocksource/sh_cmt.o
drivers/clocksource/sh_cmt.c: In function 'sh_cmt_map_memory':
drivers/clocksource/sh_cmt.c:920:2: error: implicit declaration of function 'ioremap_nocache' [-Werror=implicit-function-declaration]

    cmt->mapbase = ioremap_nocache(mem->start, resource_size(mem));
    ^
  drivers/clocksource/sh_cmt.c:920:15: warning: assignment makes pointer from integer without a cast [enabled by default]
    cmt->mapbase = ioremap_nocache(mem->start, resource_size(mem));
                 ^
  drivers/clocksource/sh_cmt.c: In function 'sh_cmt_setup':
  drivers/clocksource/sh_cmt.c:1034:2: error: implicit declaration of function 'iounmap' [-Werror=implicit-function-declaration]
    iounmap(cmt->mapbase);
    ^

---
 drivers/clocksource/Kconfig | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

index 82a2ebe..2ad6d4e 100644
@@ -172,7 +172,7 @@ config SYS_SUPPORTS_EM_STI
 
 config SH_TIMER_CMT
 	bool "Renesas CMT timer driver" if COMPILE_TEST
-	depends on GENERIC_CLOCKEVENTS
+	depends on GENERIC_CLOCKEVENTS && HAS_IOMEM
 	default SYS_SUPPORTS_SH_CMT
 	help
 	  This enables build of a clocksource and clockevent driver for

@@ -181,7 +181,7 @@ config SH_TIMER_CMT
 
 config SH_TIMER_MTU2
 	bool "Renesas MTU2 timer driver" if COMPILE_TEST
-	depends on GENERIC_CLOCKEVENTS
+	depends on GENERIC_CLOCKEVENTS && HAS_IOMEM
 	default SYS_SUPPORTS_SH_MTU2
 	help
 	  This enables build of a clockevent driver for the Multi-Function

@@ -190,7 +190,7 @@ config SH_TIMER_MTU2
 
 config SH_TIMER_TMU
 	bool "Renesas TMU timer driver" if COMPILE_TEST
-	depends on GENERIC_CLOCKEVENTS
+	depends on GENERIC_CLOCKEVENTS && HAS_IOMEM
 	default SYS_SUPPORTS_SH_TMU
 	help
 	  This enables build of a clocksource and clockevent driver for

1.9.3