Move mGvmqPlatform from header file to cpp

Fixes duplicate symbol when linking BootControl.o and
libboot_control_qti.o.

Change-Id: I387a6fc24ecaef2bd1f2326f0010688b8f63ec45
diff --git a/1.1/libboot_control_qti/libboot_control_qti.cpp b/1.1/libboot_control_qti/libboot_control_qti.cpp
index 25604aa..ca024b8 100644
--- a/1.1/libboot_control_qti/libboot_control_qti.cpp
+++ b/1.1/libboot_control_qti/libboot_control_qti.cpp
@@ -80,6 +80,8 @@
 	ATTR_UNBOOTABLE,
 };
 
+bool mGvmqPlatform = false;
+
 using ::android::bootable::GetMiscVirtualAbMergeStatus;
 using ::android::bootable::InitMiscVirtualAbMessageIfNeeded;
 using ::android::bootable::SetMiscVirtualAbMergeStatus;
diff --git a/1.1/libboot_control_qti/libboot_control_qti.h b/1.1/libboot_control_qti/libboot_control_qti.h
index bc49d65..837be77 100644
--- a/1.1/libboot_control_qti/libboot_control_qti.h
+++ b/1.1/libboot_control_qti/libboot_control_qti.h
@@ -51,5 +51,3 @@
 
 // IBootControl 1.2 methods
 int get_active_boot_slot();
-
-bool mGvmqPlatform = false;