phosphor-led-sysfs: Disable building tests

We don't yet support turning on ptest so we are wasting cycles building
them.

Change-Id: I21ebd21b45b4b8338d22b5a74b4afc8bae3a1f39
Signed-off-by: William A. Kennington III <wak@google.com>
diff --git a/meta-phosphor/recipes-phosphor/leds/phosphor-led-sysfs_git.bb b/meta-phosphor/recipes-phosphor/leds/phosphor-led-sysfs_git.bb
index ce81cb4..f1a1112 100644
--- a/meta-phosphor/recipes-phosphor/leds/phosphor-led-sysfs_git.bb
+++ b/meta-phosphor/recipes-phosphor/leds/phosphor-led-sysfs_git.bb
@@ -16,6 +16,8 @@
 
 DBUS_SERVICE_${PN} += "xyz.openbmc_project.led.controller@.service"
 
+EXTRA_OEMESON += "-Dtests=disabled"
+
 SRC_URI += "git://github.com/openbmc/phosphor-led-sysfs"
 SRC_URI += "file://70-leds.rules"
 SRCREV = "5ee5f3b7162cb5d8e6780a9571e0b0ca3daf7c6e"