staging,spear_adc: 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/staging/iio/adc/spear_adc.c: In function ‘spear_adc_probe’:
drivers/staging/iio/adc/spear_adc.c:393:2: error: implicit declaration of function ‘iounmap’ [-Werror=implicit-function-declaration

Signed-off-by: Richard Weinberger <richard@nod.at>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/staging/iio/adc/Kconfig b/drivers/staging/iio/adc/Kconfig
index e3d643001952c2fd46dc7f3355cb834da693cf9c..7d5d6755db7fc3388adad0364ba6b2bc79285b7e 100644 (file)
--- a/drivers/staging/iio/adc/Kconfig
+++ b/drivers/staging/iio/adc/Kconfig
@@ -128,6 +128,7 @@ config MXS_LRADC
 config SPEAR_ADC
        tristate "ST SPEAr ADC"
        depends on PLAT_SPEAR || COMPILE_TEST
+       depends on HAS_IOMEM
        help
          Say yes here to build support for the integrated ADC inside the
          ST SPEAr SoC. Provides direct access via sysfs.