staging: pi433: Fix indentation in rf69_enum.h

Basically just 's/    /\t/', to fix checkpatch.pl warnings:
"please, no spaces at the start of a line".
Signed-off-by: Simon Sandström <simon@nikanor.nu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/pi433/rf69_enum.h

@@ -178,5 +178,4 @@ enum dagc {
 	improve4LowModulationIndex
 };
 
-
 #endif