kvm tools: Introduce weak (default) load_bzimage function

... to get rid of its function definition from archs that don't
support it.

Signed-off-by: Andreas Herrmann <andreas.herrmann@caviumnetworks.com>
Signed-off-by: Pekka Enberg <penberg@kernel.org>

arm/fdt.c

@@ -276,10 +276,3 @@ int load_flat_binary(struct kvm *kvm, int fd_kernel, int fd_initrd,
 
 	return true;
 }
-
-bool load_bzimage(struct kvm *kvm, int fd_kernel, int fd_initrd,
-		  const char *kernel_cmdline)
-{
-	/* To b or not to b? That is the zImage. */
-	return false;
-}

kvm.c

@@ -355,6 +355,12 @@ int __attribute__((__weak__)) load_elf_binary(struct kvm *kvm, int fd_kernel,
 	return false;
 }
 
+bool __attribute__((__weak__)) load_bzimage(struct kvm *kvm, int fd_kernel,
+				int fd_initrd, const char *kernel_cmdline)
+{
+	return false;
+}
+
 bool kvm__load_kernel(struct kvm *kvm, const char *kernel_filename,
 		const char *initrd_filename, const char *kernel_cmdline)
 {

powerpc/kvm.c

@@ -204,13 +204,6 @@ int load_flat_binary(struct kvm *kvm, int fd_kernel, int fd_initrd, const char *
 	return true;
 }
 
-bool load_bzimage(struct kvm *kvm, int fd_kernel, int fd_initrd,
-		  const char *kernel_cmdline)
-{
-	/* We don't support bzImages. */
-	return false;
-}
-
 struct fdt_prop {
 	void *value;
 	int size;