generic: filter out CONFIG_PAHOLE_HAS_SPLIT_BTF

CONFIG_PAHOLE_HAS_SPLIT_BTF should be runtime detected as it depends on
pahole being available on the host, so filter it out of configs.

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

target/linux/generic/config-filter

@@ -10,6 +10,7 @@ CONFIG_CLANG_VERSION=.*
 # CONFIG_LD_.* is not set
 CONFIG_LLD_VERSION=.*
 CONFIG_PAHOLE_VERSION=.*
+CONFIG_PAHOLE_HAS_SPLIT_BTF=.*
 CONFIG_PLUGIN_HOSTCC=".*"
 # CONFIG_SET_FS is not set
 # CONFIG_TASKS_.* is not set