Update Skylake overlay template to sync with PECI v7

simple-mfd is not needed because peci-client has a dedicated MFD
driver.

Change-Id: I1c58a3bbf1af2d906c6f355938eb293bb61a2eab
Signed-off-by: Jae Hyun Yoo <jae.hyun.yoo@intel.com>
diff --git a/overlay_templates/SkylakeCPU.template b/overlay_templates/SkylakeCPU.template
index cbaa49a..e4b8325 100644
--- a/overlay_templates/SkylakeCPU.template
+++ b/overlay_templates/SkylakeCPU.template
@@ -9,7 +9,7 @@
             #size-cells = <0>;
 
             peci-client@Skylake_CPU_$cpu_id {
-                compatible = "intel,peci-client", "simple-mfd";
+                compatible = "intel,peci-client";
                 oemname1 = "$Name";
                 reg = <$address>;
                 status = "okay";