MLBEDSW-3763: Vela memory setting

 - Fixed bug which stopped DRAM being selected for Ethos-U55
 - Fixed type of default values used by burst length and latency

Signed-off-by: Tim Hall <tim.hall@arm.com>
Change-Id: Ic1ae36586e3b4ffe8af8fea1fd23501d434b7731
diff --git a/vela.ini b/vela.ini
index 47fa669..5ac5956 100644
--- a/vela.ini
+++ b/vela.ini
@@ -113,7 +113,7 @@
 arena_mem_area=Axi0
 cache_mem_area=Axi0
 
-; Shared SRAM: the SRAM is shared between the Ethos-U and the Cortex-M software.
+; Shared SRAM: the SRAM is shared between the Ethos-U and the Cortex-M software
 ; The non-SRAM memory is assumed to be read-only
 [Memory_Mode.Shared_Sram]
 const_mem_area=Axi1