hm: Re-add Hardware Number 10104000 for HM-400

This was probably removed by accident?  Resulted in no Max. Power shown
for this device in live view.

References: #1111
Fixes: 201098ae0b ("0.7.45 * change ePaper text to symbols PR #1131 * added some invertes to dev info list #1111")
Signed-off-by: Alexander Dahl <post@lespocky.de>

src/hm/hmDefines.h

@@ -307,6 +307,7 @@ const devInfo_t devInfo[] = {
     { 0x101010,  300 },
     { 0x101020,  350 },
     { 0x101030,  400 },
+    { 0x101040,  400 },
     { 0x101110,  600 }, // [TSOL800(DE) ..20, HWv=2.66], [HM-600 ..20, HWv=2.66]
     { 0x101120,  700 },
     { 0x101130,  800 },