QcomModulePkg: Update inf for avb 2.0

Update build files for avb 2.0 support.

Change-Id: I982cb79bebbed362d99230a4153e5f431dc9d7a5
diff --git a/QcomModulePkg/QcomModulePkg.dsc b/QcomModulePkg/QcomModulePkg.dsc
index fda5df4..3ba7a50 100644
--- a/QcomModulePkg/QcomModulePkg.dsc
+++ b/QcomModulePkg/QcomModulePkg.dsc
@@ -93,6 +93,9 @@
   !if $(VERIFIED_BOOT)
       GCC:*_*_*_CC_FLAGS = -DVERIFIED_BOOT
   !endif
+  !if $(VERIFIED_BOOT_2)
+      GCC:*_*_*_CC_FLAGS = -DVERIFIED_BOOT_2
+  !endif
   !if $(USER_BUILD_VARIANT) == 0
       GCC:*_*_*_CC_FLAGS = -DENABLE_UPDATE_PARTITIONS_CMDS -DENABLE_BOOT_CMD -DENABLE_DEVICE_CRITICAL_LOCK_UNLOCK_CMDS
   !else