fw-update: Increase BMC firmware size limit

As BMC Firmware size is increased, firmware update via KCS is not
allow if BMC firmware size is crossing 35MB.
So increase BMC FW size to 37MB.

Tested:
Able to process the file using KCS interface and BMC firmware update
successful.

Signed-off-by: Jayaprakash Mutyala <mutyalax.jayaprakash@intel.com>
Change-Id: I570cf84a970f066bff25abda2866bad5a6c2d3b7
diff --git a/src/firmware-update.cpp b/src/firmware-update.cpp
index a9a7d72..59554d0 100644
--- a/src/firmware-update.cpp
+++ b/src/firmware-update.cpp
@@ -167,7 +167,7 @@
 {
     return 1024u * 1024u * v;
 }
-static constexpr size_t maxFirmwareImageSize = 35_MB;
+static constexpr size_t maxFirmwareImageSize = 37_MB;
 
 static bool localDownloadInProgress(void)
 {