[PATCH bpf-next] riscv, bpf: fix patch_text implicit declaration

[Randy Dunlap]

bpf_jit_comp64.c uses patch_text(), so add it to a local header file
to prevent the build error:

../arch/riscv/net/bpf_jit_comp64.c: In function 'bpf_arch_text_poke':
../arch/riscv/net/bpf_jit_comp64.c:691:23: error: implicit declaration of function 'patch_text'; did you mean 'path_get'? [-Werror=implicit-function-declaration]
  691 |                 ret = patch_text(ip, new_insns, ninsns);
      |                       ^~~~~~~~~~

Fixes: 596f2e6f9cf4 ("riscv, bpf: Add bpf_arch_text_poke support for RV64")
Signed-off-by: Randy Dunlap <rdunlap at infradead.org>
Reported-by: kernel test robot <lkp at intel.com>
Link: https://lore.kernel.org/r/202302271000.Aj4nMXbZ-lkp@intel.com
Cc: Pu Lehui <pulehui at huawei.com>
Cc: Luke Nelson <luke.r.nels at gmail.com>
Cc: Xi Wang <xi.wang at gmail.com>
Cc: bpf at vger.kernel.org
Cc: Alexei Starovoitov <ast at kernel.org>
Cc: Daniel Borkmann <daniel at iogearbox.net>
Cc: John Fastabend <john.fastabend at gmail.com>
Cc: Andrii Nakryiko <andrii at kernel.org>
Cc: Paul Walmsley <paul.walmsley at sifive.com>
Cc: Palmer Dabbelt <palmer at dabbelt.com>
Cc: Albert Ou <aou at eecs.berkeley.edu>
Cc: "Björn Töpel" <bjorn at kernel.org>
Cc: linux-riscv at lists.infradead.org
---
What is the proper path to have this merged soon to stop build
errors?

 arch/riscv/net/bpf_jit.h |    1 +
 1 file changed, 1 insertion(+)

diff -- a/arch/riscv/net/bpf_jit.h b/arch/riscv/net/bpf_jit.h
--- a/arch/riscv/net/bpf_jit.h
+++ b/arch/riscv/net/bpf_jit.h
@@ -12,6 +12,7 @@
 #include <linux/bpf.h>
 #include <linux/filter.h>
 #include <asm/cacheflush.h>
+#include <asm/patch.h>
 
 static inline bool rvc_enabled(void)
 {