Get some build coverage of Exynos H/W random number generator
driver. Driver uses devm_ioremap_resource() so add IOMEM dependency for
the compile testing.

Signed-off-by: Krzysztof Kozlowski <k.kozlow...@samsung.com>

---

Compile-tested on x86, x86_64, ppc64, arm, arm64 and mips.
---
 drivers/char/hw_random/Kconfig | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/char/hw_random/Kconfig b/drivers/char/hw_random/Kconfig
index 67ee8b08ab53..3c5be60befce 100644
--- a/drivers/char/hw_random/Kconfig
+++ b/drivers/char/hw_random/Kconfig
@@ -309,7 +309,8 @@ config HW_RANDOM_POWERNV
 
 config HW_RANDOM_EXYNOS
        tristate "EXYNOS HW random number generator support"
-       depends on ARCH_EXYNOS
+       depends on ARCH_EXYNOS || COMPILE_TEST
+       depends on HAS_IOMEM
        default HW_RANDOM
        ---help---
          This driver provides kernel-side support for the Random Number
-- 
2.5.0

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