Use delay with asm

Because llvm_asm!  has been replaced by asm!

Author: stappersg

Cargo.toml

@@ -6,7 +6,7 @@ members = [
 
 [package]
 name = "ruduino"
-version = "0.3.2"
+version = "0.3.3"
 edition = "2018"
 authors = [
   "The AVR-Rust Project Developers",
@@ -29,7 +29,7 @@ all-mcus = []
 
 [dependencies]
 avr-config = { version = "2.0", features = ["cpu-frequency"] }
-avr_delay = "0.3"
+avr_delay = "0.4"
 avr-std-stub = { version = "1.0", optional = true }
 const_env--value = "0.1"
 target-cpu-macro = "0.1"