add can driver

hc

2023-12-02 57e32c52610e6a560beda60bf33c48f9f42306d5

 kernel/drivers/gpu/drm/rockchip/ebc-dev/bufmanage/buf_manage.h
..
..
@@ -33,6 +33,7 @@
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 	int needpic;
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 };
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+int ebc_drop_one_dsp_buf(void);
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 struct ebc_buf_s *ebc_empty_osd_buf_get(void);
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 struct ebc_buf_s *ebc_osd_buf_clone(void);
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 int ebc_buf_release(struct ebc_buf_s *release_buf);