Update riscv-rt-macros dependency

riscv-rt/Cargo.toml

@@ -11,7 +11,7 @@ license = "ISC"
 [dependencies]
 r0 = "0.2.2"
 riscv = "0.5.3"
-riscv-rt-macros = { path = "macros", version = "0.1.5" }
+riscv-rt-macros = { path = "macros", version = "0.1.6" }
 
 [features]
 inline-asm = ["riscv/inline-asm"]