Lint fixes for no priv mode configs

src/privileged/csr.sv

@@ -259,6 +259,8 @@ module csr import cvw::*;  #(parameter cvw_t P) (
     assign SCOUNTEREN_REGW = '0;
     assign SATP_REGW = '0;
     assign IllegalCSRSAccessM = 1'b1;
+    assign STimerInt = '0;
+    assign SENVCFG_REGW = '0;
   end
 
   // Floating Point CSRs in User Mode only needed if Floating Point is supported

src/privileged/csri.sv

@@ -73,6 +73,7 @@ module csri import cvw::*;  #(parameter cvw_t P) (
     assign MIP_WRITE_MASK = 12'h000;
     assign SIP_WRITE_MASK = 12'h000;
     assign MIE_WRITE_MASK = 12'h888;
+    assign STIP = '0;
   end
   always_ff @(posedge clk)
     if (reset)          MIP_REGW_writeable <= 12'b0;

src/privileged/csrm.sv

@@ -195,6 +195,9 @@ module csrm  import cvw::*;  #(parameter cvw_t P) (
       flopenr #(P.XLEN) MENVCFGHreg(clk, reset, WriteMENVCFGHM, MENVCFG_WriteValM[63:32], MENVCFG_REGW[63:32]);
       assign MENVCFGH_REGW = MENVCFG_REGW[63:32];
     end
+  end else begin
+    assign MENVCFG_REGW = '0;
+    assign MENVCFGH_REGW = '0;
   end
 
   // Read machine mode CSRs