Update asm.S

Co-authored-by: Vadim Kaushan <admin@disasm.info>

riscv-rt/asm.S

@@ -173,6 +173,7 @@ _start_trap:
 .section .text
 .global default_setup_interrupts
 
+.global default_setup_interrupts
 default_setup_interrupts:
     // Set trap handler
     la t0, _start_trap