Add MVP notes.

applications/lofar2/doc/prestudy/station2_sdp_transient_buffer.txt

@@ -6,6 +6,11 @@ References:
 [3] L1 LOFAR2 Decision: Transport of buffer data from Station to CEP, https://support.astron.nl/confluence/pages/viewpage.action?pageId=94766339
 [4] LOFAR1 TBB: https://support.astron.nl/confluence/display/L2M/Temporary+storage+of+documents+and+papers
 
+0) MVP = minimal viable product:
+  - omvat TB, maar nog niet Transient Detectie (TDet)
+  - needs ring, because 6 antennas per event are typically not connected to one FPGA
+
+
 1) DDR4 memory per receiver input
 
 Bottom up: