lib/crypto: sha1: Rename sha1_init() to sha1_init_raw()

Rename the existing sha1_init() to sha1_init_raw(), since it conflicts
with the upcoming library function.  This will later be removed, but
this keeps the kernel building for the introduction of the library.

Reviewed-by: Ard Biesheuvel <ardb@kernel.org>
Link: https://lore.kernel.org/r/20250712232329.818226-3-ebiggers@kernel.org
Signed-off-by: Eric Biggers <ebiggers@kernel.org>

kernel/bpf/core.c

@@ -304,7 +304,7 @@ int bpf_prog_calc_tag(struct bpf_prog *fp)
 	if (!raw)
 		return -ENOMEM;
 
-	sha1_init(digest);
+	sha1_init_raw(digest);
 	memset(ws, 0, sizeof(ws));
 
 	/* We need to take out the map fd for the digest calculation