Pass OEM commands to HAL

Bug: 78793464
Bug: 79480454
Test: fastboot oem command

Change-Id: Ibaabef6ea725857102f7531997fcff2a1dbdc1ca
Merged-In: Ibaabef6ea725857102f7531997fcff2a1dbdc1ca
(cherry picked from commit 993b4edb0f33ac4f46cd4da932ba5fb033c06328)
diff --git a/fastboot/constants.h b/fastboot/constants.h
index 57e25fc..2a68a2b 100644
--- a/fastboot/constants.h
+++ b/fastboot/constants.h
@@ -32,6 +32,7 @@
 #define FB_CMD_DELETE_PARTITION "delete-logical-partition"
 #define FB_CMD_RESIZE_PARTITION "resize-logical-partition"
 #define FB_CMD_UPDATE_SUPER "update-super"
+#define FB_CMD_OEM "oem"
 
 #define RESPONSE_OKAY "OKAY"
 #define RESPONSE_FAIL "FAIL"