generic: Update cfg-if to 1

Author: taiki-e

avr-hal-generic/Cargo.toml

@@ -17,7 +17,7 @@ features = ["docsrs"]
 docsrs = ["avr-device/docsrs"]
 
 [dependencies]
-cfg-if = "0.1.7"
+cfg-if = "1"
 nb = "1.1.0"
 ufmt = "0.2.0"
 paste = "1.0.0"