risc-v/mpfs: ld-envm-opensbi.script: add all opensbi code to .text.sbi

Add the rest of the OpenSBI code to .text.sbi -section. They belong
to there. This frees up some space in the very limited eNVM.

Signed-off-by: Eero Nurkkala <eero.nurkkala@offcode.fi>

boards/risc-v/mpfs/icicle/scripts/ld-envm-opensbi.script

@@ -34,6 +34,9 @@ SECTIONS
 {
     .text.sbi : {
       sbi*
+      riscv_atomic*
+      riscv_locks*
+      riscv_asm*
     } > ddr
 
     .ddrstorage : {