phosphor: classes: remove tabs from python code

A recent upstream bitbake enhancement results in these warnings:

WARNING: python should use 4 spaces indentation, but found tabs in
config-in-skeleton.bbclass, line 19
WARNING: python should use 4 spaces indentation, but found tabs in
config-in-skeleton.bbclass, line 20

python doesn't really do tabs anyway...so update to be conventional by
removing tabs.

Change-Id: Idfd4a7b0c1a719a7225391a7cb21d93e1511232b
Signed-off-by: Brad Bishop <bradleyb@fuzziesquirrel.com>
diff --git a/classes/config-in-skeleton.bbclass b/classes/config-in-skeleton.bbclass
index da49d61..b767537 100644
--- a/classes/config-in-skeleton.bbclass
+++ b/classes/config-in-skeleton.bbclass
@@ -16,8 +16,8 @@
 S = "${WORKDIR}/git/configs"
 
 python() {
-	machine = d.getVar('MACHINE', True).capitalize() + '.py'
-	d.setVar('_config_in_skeleton', machine)
+    machine = d.getVar('MACHINE', True).capitalize() + '.py'
+    d.setVar('_config_in_skeleton', machine)
 }
 
 do_make_setup() {