Update attribute-arch.s double-trap

Author: T-Tie

llvm/test/MC/RISCV/attribute-arch.s

@@ -321,6 +321,12 @@
 .attribute arch, "rv32i_sscsrind1p0"
 # CHECK: attribute      5, "rv32i2p1_sscsrind1p0"
 
+.attribute arch, "rv32i_smdbltrp1p0"
+# CHECK: attribute      5, "rv32i2p1_smdbltrp1p0"
+
+.attribute arch, "rv32i_ssdbltrp1p0"
+# CHECK: attribute      5, "rv32i2p1_ssdbltrp1p0"
+
 .attribute arch, "rv32i_smcdeleg1p0"
 # CHECK: attribute      5, "rv32i2p1_smcdeleg1p0"