adb: add support for 'wait-for-any'.

Allow waiting for a device in any state.

Bug: http://b/28168212
Change-Id: I1876ecd70089ca88f2da5de4182e13724ec50501
diff --git a/services.cpp b/services.cpp
index d5e963b..67e8e41 100644
--- a/services.cpp
+++ b/services.cpp
@@ -370,7 +370,7 @@
         std::string error = "unknown error";
         const char* serial = sinfo->serial.length() ? sinfo->serial.c_str() : NULL;
         atransport* t = acquire_one_transport(sinfo->transport_type, serial, &is_ambiguous, &error);
-        if (t != nullptr && t->connection_state == sinfo->state) {
+        if (t != nullptr && (sinfo->state == kCsAny || sinfo->state == t->connection_state)) {
             SendOkay(fd);
             break;
         } else if (!is_ambiguous) {
@@ -534,6 +534,8 @@
             sinfo->state = kCsSideload;
         } else if (!strcmp(name, "-bootloader")) {
             sinfo->state = kCsBootloader;
+        } else if (!strcmp(name, "-any")) {
+            sinfo->state = kCsAny;
         } else {
             return nullptr;
         }