amd/common: Add extern "C" to some headers that were missing it.

We'd like to include some of these in C++ code later.
Specifically, ACO is written in C++ and we would like to use
some of this code in ACO in order to avoid code duplication.

Signed-off-by: Timur Kristóf <timur.kristof@gmail.com>
Reviewed-by: Daniel Schürmann <daniel@schuermann.dev>

src/amd/common/ac_debug.h

@@ -36,6 +36,10 @@
 
 #define AC_MAX_WAVES_PER_CHIP (64 * 40)
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 struct ac_wave_info {
 	unsigned se; /* shader engine */
 	unsigned sh; /* shader array */
@@ -67,4 +71,8 @@ bool ac_vm_fault_occured(enum chip_class chip_class,
 unsigned ac_get_wave_info(enum chip_class chip_class,
 			  struct ac_wave_info waves[AC_MAX_WAVES_PER_CHIP]);
 
+#ifdef __cplusplus
+}
+#endif
+
 #endif

src/amd/common/ac_rtld.h

@@ -31,6 +31,10 @@
 #include "util/u_dynarray.h"
 #include "compiler/shader_enums.h"
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 struct ac_rtld_part;
 struct ac_shader_config;
 struct radeon_info;
@@ -134,4 +138,8 @@ struct ac_rtld_upload_info {
 
 bool ac_rtld_upload(struct ac_rtld_upload_info *u);
 
+#ifdef __cplusplus
+}
+#endif
+
 #endif /* AC_RTLD_H */

src/amd/common/ac_shader_util.h

@@ -31,6 +31,10 @@
 #include "ac_binary.h"
 #include "compiler/nir/nir.h"
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 enum ac_image_dim {
 	ac_image_1d,
 	ac_image_2d,
@@ -69,4 +73,8 @@ ac_get_fs_input_vgpr_cnt(const struct ac_shader_config *config,
 			 signed char *face_vgpr_index,
 			 signed char *ancillary_vgpr_index);
 
+#ifdef __cplusplus
+}
+#endif
+
 #endif