bmc_monitor_app: Fix build issue when npcm enabled

Incorrect function name error will show up when enable the feature
`npcm7xx-or-new`.
This CL is just to fix that build issue.

Tested: Build pass with this CL + `npcm7xx-or-newer` enabled.

Google-Bug-Id: N/A
Change-Id: Ie513891287d2383c579cf2e8812feb2969f76d57
Signed-off-by: Michael Shen <gpgpgp@google.com>
diff --git a/src/bmc_monitor_app.cpp b/src/bmc_monitor_app.cpp
index f131d59..3b38e5c 100644
--- a/src/bmc_monitor_app.cpp
+++ b/src/bmc_monitor_app.cpp
@@ -177,7 +177,7 @@
         constexpr uint32_t SEC_CNT_ADDR = 0xF0801068;
 
         auto powerOnSec = util->readMem4Bytes(SEC_CNT_ADDR);
-        auto upTimeMS = util->getUpTimeInMS();
+        auto upTimeMS = util->getUpTimeInMs();
         if (powerOnSec != std::nullopt && upTimeMS != std::nullopt)
         {
             bootManager->setDuration("FirmwarePlusLoader",