dt: disable self-tests for !OF_IRQ

Fix OF selftest compile on sparc which does not enable OF_IRQ.

drivers/of/selftest.c:177: undefined reference to `of_irq_parse_one'
drivers/of/selftest.c:197: undefined reference to `of_irq_parse_one'
drivers/of/selftest.c:248: undefined reference to `of_irq_parse_one'

Signed-off-by: Rob Herring <rob.herring@calxeda.com>
Acked-by: Grant Likely <grant.likely@linaro.org>

1 files changed, 1 insertions, 0 deletions

diff --git a/drivers/of/Kconfig b/drivers/of/Kconfig
index 9d2009a9004d..9b28f8b0c3c2 100644
--- a/drivers/of/Kconfig
+++ b/drivers/of/Kconfig
@@ -17,6 +17,7 @@ config PROC_DEVICETREE
 
 config OF_SELFTEST
         bool "Device Tree Runtime self tests"
+        depends on OF_IRQ
         help
           This option builds in test cases for the device tree infrastructure
           that are executed one at boot time, and the results dumped to the