image: Rename fit_image_check_hashes() to fit_image_verify()

This is the main entry point to the FIT image verification code. We will
be using it to handle image verification with signatures, so rename the
function.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Marek Vasut <marex@denx.de>
diff --git a/include/image.h b/include/image.h
index dc8f8b1..59e8064 100644
--- a/include/image.h
+++ b/include/image.h
@@ -615,8 +615,8 @@
 int fit_set_hashes(void *fit);
 int fit_image_set_hashes(void *fit, int image_noffset);
 
-int fit_image_check_hashes(const void *fit, int noffset);
-int fit_all_image_check_hashes(const void *fit);
+int fit_image_verify(const void *fit, int noffset);
+int fit_all_image_verify(const void *fit);
 int fit_image_check_os(const void *fit, int noffset, uint8_t os);
 int fit_image_check_arch(const void *fit, int noffset, uint8_t arch);
 int fit_image_check_type(const void *fit, int noffset, uint8_t type);