build: bpf: drop clang-11 lookup

CLANG_MIN_VER is 12, so there is no point in looking for clang-11.

Signed-off-by: Matthias Schiffer <[email protected]>
Link: https://github.com/openwrt/openwrt/pull/18422
Signed-off-by: Robert Marko <[email protected]>
(cherry picked from commit 45f0eb106bed8868c02e0ccfb545b7e1c4279841)

include/bpf.mk

@@ -10,7 +10,7 @@ ifneq ($(CONFIG_USE_LLVM_HOST),)
   else
     BPF_PATH:=$(PATH)
   endif
-  CLANG:=$(firstword $(shell PATH='$(BPF_PATH)' command -v clang clang-13 clang-12 clang-11))
+  CLANG:=$(firstword $(shell PATH='$(BPF_PATH)' command -v clang clang-13 clang-12))
   LLVM_VER:=$(subst clang,,$(notdir $(CLANG)))
 endif
 ifneq ($(CONFIG_USE_LLVM_PREBUILT),)