generic: config-filter: filter out CONFIG_RUSTC_SUPPORTS_* symbols

CONFIG_RUSTC_SUPPORTS_* is set based on rustc presence and version,
so we need to filter it out.

Signed-off-by: Robert Marko <[email protected]>

target/linux/generic/config-filter

@@ -17,6 +17,7 @@ CONFIG_PAHOLE_HAS_SPLIT_BTF=.*
 CONFIG_PAHOLE_VERSION=.*
 CONFIG_PLUGIN_HOSTCC=".*"
 CONFIG_RUSTC_LLVM_VERSION=.*
+CONFIG_RUSTC_SUPPORTS_.*=.*
 CONFIG_RUSTC_VERSION=.*
 # CONFIG_SET_FS is not set
 # CONFIG_TASKS_.* is not set