regenerate PAC, va416xx v0.3.0

va416xx/src/generic/raw.rs

@@ -41,6 +41,7 @@ impl<FI> BitReader<FI> {
         }
     }
 }
+#[must_use = "after creating `FieldWriter` you need to call field value setting method"]
 pub struct FieldWriter<'a, REG, const WI: u8, FI = u8, Safety = Unsafe>
 where
     REG: Writable + RegisterSpec,
@@ -66,6 +67,7 @@ where
         }
     }
 }
+#[must_use = "after creating `BitWriter` you need to call bit setting method"]
 pub struct BitWriter<'a, REG, FI = bool, M = BitM>
 where
     REG: Writable + RegisterSpec,