powerstats: Correct the layout of display state residency

Bug: 211949266
Test: dumpsys android.hardware.power.stats.IPowerStats/default
Change-Id: I5ec7d3039fa222e7d137707bc0ff3cb38c19eb11
Signed-off-by: Darren Hsu <darrenhsu@google.com>

powerstats/cheetah/service.cpp

@@ -37,9 +37,9 @@ void addDisplay(std::shared_ptr<PowerStats> p) {
     // Add display residency stats
     std::vector<std::string> states = {
         "Off",
-        "LP: 1440x3120@1"
+        "LP: 1440x3120@1",
         "LP: 1440x3120@10",
-        "LP: 1440x3120@30"
+        "LP: 1440x3120@30",
         "On: 1440x3120@60",
         "On: 1440x3120@90",
         "On: 1440x3120@120",