nir: add shader_info::source_sha1, its initialization and printing

Reviewed-by: Pierre-Eric Pelloux-Prayer <pierre-eric.pelloux-prayer@amd.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/13869>

src/compiler/shader_info.h

@@ -26,6 +26,7 @@
 #define SHADER_INFO_H
 
 #include "util/bitset.h"
+#include "util/sha1/sha1.h"
 #include "shader_enums.h"
 #include <stdint.h>
 
@@ -125,6 +126,9 @@ typedef struct shader_info {
    /* Shader is internal, and should be ignored by things like NIR_PRINT */
    bool internal;
 
+   /* SHA1 of the original source, used by shader detection in drivers. */
+   uint8_t source_sha1[SHA1_DIGEST_LENGTH];
+
    /** The shader stage, such as MESA_SHADER_VERTEX. */
    gl_shader_stage stage:8;