Support fastboot variable battery-soc-ok

Bug: 79480454
Test: fastboot getvar battery-soc-ok

Change-Id: Icfd70a71f1598e437316d4b8f895fd851516febb
Merged-In: Icfd70a71f1598e437316d4b8f895fd851516febb
(cherry picked from commit 9a1203b7acf7cf3a09ccec022c4698c994143bbd)
diff --git a/fastboot/device/variables.h b/fastboot/device/variables.h
index e7c3c7c..59b71e8 100644
--- a/fastboot/device/variables.h
+++ b/fastboot/device/variables.h
@@ -57,6 +57,9 @@
                            std::string* message);
 bool GetBatteryVoltage(FastbootDevice* device, const std::vector<std::string>& args,
                        std::string* message);
+bool GetBatterySoCOk(FastbootDevice* device, const std::vector<std::string>& args,
+                     std::string* message);
+
 // Helpers for getvar all.
 std::vector<std::vector<std::string>> GetAllPartitionArgsWithSlot(FastbootDevice* device);
 std::vector<std::vector<std::string>> GetAllPartitionArgsNoSlot(FastbootDevice* device);