libc: fix missing linux-raw-dep

Fix compilation  Mesa3D on mips Linux

Author: HmnSn

src/backend/libc/c.rs

@@ -67,7 +67,7 @@ pub(crate) const ETH_P_MCTP: c_int = linux_raw_sys::if_ether::ETH_P_MCTP as _;
 pub(crate) const MS_NOSYMFOLLOW: c_ulong = linux_raw_sys::general::MS_NOSYMFOLLOW as _;
 
 #[cfg(all(
-    linux_kernel,
+    linux-raw-dep,
     any(
         target_arch = "mips",
         target_arch = "mips32r6",

src/signal.rs

@@ -171,7 +171,7 @@ impl Signal {
         target_os = "aix",
         target_os = "hermit",
         all(
-            linux_kernel,
+            linux-raw-dep,
             any(
                 target_arch = "mips",
                 target_arch = "mips32r6",