bssgp: Adapt flowcontrol MS default to current alloc algorithm

Currently the values Bmax/R default MS are computed under the
assumption than min(4, N_PDCH) DL slots are allocated for an MS, even
if multislot assignment is not enabled.

This commit changes the computation to assume 1 DL slot if algorithm
A is selected or the dynamic algorithm is used and has disabled
multislot assigment due to high load.

Sponsored-by: On-Waves ehf
diff --git a/src/gprs_rlcmac.h b/src/gprs_rlcmac.h
index 3c1f1a0..f193dfa 100644
--- a/src/gprs_rlcmac.h
+++ b/src/gprs_rlcmac.h
@@ -93,6 +93,9 @@
 	uint8_t trx, uint8_t ts, uint16_t arfcn, 
         uint32_t fn, uint8_t block_nr);
 
+int gprs_alloc_max_dl_slots_per_ms(struct gprs_rlcmac_bts *bts,
+	uint8_t ms_class = 0);
+
 extern "C" {
 #endif
 int alloc_algorithm_a(struct gprs_rlcmac_bts *bts,