Fix clippy

src/kernel/arch/x86_64/cpuid.rs

@@ -3,6 +3,8 @@
 
 #![allow(dead_code)]
 
+use core::str::FromStr;
+
 use lazy_static::lazy_static;
 use raw_cpuid::CpuId;
 use raw_cpuid::CpuIdReaderNative;
@@ -86,6 +88,13 @@ impl TryFrom<&str> for ProcessorVendor {
     }
 }
 
+impl FromStr for ProcessorVendor {
+    type Err = ();
+    fn from_str(s: &str) -> Result<Self, Self::Err> {
+        ProcessorVendor::try_from(s)
+    }
+}
+
 impl ProcessorVendor {
     pub fn is_hypervisor(&self) -> bool {
         matches!(

src/kernel/log.rs

@@ -130,6 +130,13 @@ impl TryFrom<&str> for LogLevel {
     }
 }
 
+impl core::str::FromStr for LogLevel {
+    type Err = EnumParseError;
+    fn from_str(value: &str) -> Result<Self, Self::Err> {
+        LogLevel::try_from(value)
+    }
+}
+
 impl From<LogLevel> for String {
     fn from(from: LogLevel) -> String {
         match from {