drm: removing the DP Errata msg and its msg id

Since DP ERRATA message is not defined at spec, those structure
definition is removed from drm_hdcp.h

Signed-off-by: Ramalingam C <[e-mail]>
Suggested-by: Daniel Vetter <[e-mail]>
Reviewed-by: Daniel Vetter <[e-mail]>
Reviewed-by: Uma Shankar <[e-mail]>
Acked-by: Dave Airlie <[e-mail]>
Signed-off-by: Daniel Vetter <[e-mail]>
Link: https://patchwork.freedesktop.org/patch/msgid/[e-mail]

include/drm/drm_hdcp.h

···
 #define HDCP_2_2_REP_SEND_ACK			15
 #define HDCP_2_2_REP_STREAM_MANAGE		16
 #define HDCP_2_2_REP_STREAM_READY		17
-#define HDCP_2_2_ERRATA_DP_STREAM_TYPE		50
 
 #define HDCP_2_2_RTX_LEN			8
 #define HDCP_2_2_RRX_LEN			8
···
 struct hdcp2_rep_stream_ready {
 	u8	msg_id;
 	u8	m_prime[HDCP_2_2_MPRIME_LEN];
-} __packed;
-
-struct hdcp2_dp_errata_stream_type {
-	u8	msg_id;
-	u8	stream_type;
 } __packed;
 
 /* HDCP2.2 TIMEOUTs in mSec */