obmc-ikvm: rename service file to align with repo name

Updated systemd service file as following for better readability
start-ipkvm.service -> obmc-ikvm.service

Testing:

Verified systemd service using QEMU + AST2600EVB firmware.

Before changes:

root@evb-ast2600:~# systemctl status start-ipkvm
* start-ipkvm.service - OpenBMC ipKVM daemon

After changes:

root@evb-ast2600:~# systemctl status obmc-ikvm
* obmc-ikvm.service - OpenBMC ipKVM daemon

Change-Id: I8260a09b074b04c47821758c31ecad5d53eca40c
Signed-off-by: Mohammed Javith Akthar M <mohammedjavitham@ami.com>
diff --git a/src/main.cpp b/src/main.cpp
index 46e46df..1f1f912 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -39,7 +39,7 @@
 static std::unordered_map<std::string /* unitName */,
                           bool /* isSocketActivated */>
     managedServices = {{"phosphor-ipmi-net", false}, {"bmcweb", false},
-                       {"phosphor-ipmi-kcs", false}, {"start-ipkvm", false},
+                       {"phosphor-ipmi-kcs", false}, {"obmc-ikvm", false},
                        {"obmc-console", false},      {"dropbear", true},
                        {"obmc-console-ssh", true}};