Update Springbok Renode model API usage

- Renode's RiscV32 constructor changed arguments a bit, so update
  SpringbokRiscV32 to match.

Change-Id: If5804e89999b470553fae06e4032705e0c0a9ddc

shodan_infrastructure/SpringbokRiscV32.cs

diff --git a/shodan_infrastructure/SpringbokRiscV32.cs b/shodan_infrastructure/SpringbokRiscV32.cs
index 7687ea0..060cc49 100644
--- a/shodan_infrastructure/SpringbokRiscV32.cs
+++ b/shodan_infrastructure/SpringbokRiscV32.cs
@@ -37,7 +37,7 @@
                                 PrivilegeArchitecture privilegeArchitecture = PrivilegeArchitecture.Priv1_11,
                                 Endianess endianness = Endianess.LittleEndian,
                                 string cpuType = "rv32imfv_zicsr")
-            : base(null, cpuType, machine, hartId, privilegeArchitecture, endianness)
+            : base(machine, cpuType, null, hartId, privilegeArchitecture, endianness)
         {
             RegisterCustomCSRs();