watchdog: dw_wdt: Add dependency on HAS_IOMEM

On archs like S390 or um this driver cannot build nor work.
Make it depend on HAS_IOMEM to bypass build failures.

drivers/built-in.o: In function `dw_wdt_drv_probe':
drivers/watchdog/dw_wdt.c:302: undefined reference to `devm_ioremap_resource'

Signed-off-by: Richard Weinberger <richard@nod.at>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>

diff --git a/drivers/watchdog/Kconfig b/drivers/watchdog/Kconfig
index 4c4c566c52a35c73e582aa27b35fb7821ae69f8a..79d25894343a0f7d52e8702d05ec4020927d1040 100644 (file)
--- a/drivers/watchdog/Kconfig
+++ b/drivers/watchdog/Kconfig
@@ -223,6 +223,7 @@ config SA1100_WATCHDOG
 
 config DW_WATCHDOG
        tristate "Synopsys DesignWare watchdog"
+       depends on HAS_IOMEM
        help
          Say Y here if to include support for the Synopsys DesignWare
          watchdog timer found in many chips.