disp: msm: sde: add support for mdss spr hw block

This change parses SPR hw block entries from device tree and populate
SPR block as sub block of DSPP block. Change also enables register dump
by registering sub blocks with sde driver register dump routine.

Change-Id: Ic603cd3cc001dddce5dfea61341c166a5fec1682
Signed-off-by: Prabhanjan Kandula <pkandula@codeaurora.org>

msm/sde/sde_hw_dspp.c

@@ -371,6 +371,14 @@ struct sde_hw_dspp *sde_hw_dspp_init(enum sde_dspp idx,
 				c->hw.blk_off + cfg->sblk->rc.base +
 				cfg->sblk->rc.len, c->hw.xin_id);
 	}
+
+	if ((cfg->sblk->spr.id == SDE_DSPP_SPR) && cfg->sblk->spr.base) {
+		snprintf(buf, ARRAY_SIZE(buf), "%s_%d", "spr", c->idx - DSPP_0);
+		sde_dbg_reg_register_dump_range(SDE_DBG_NAME, buf,
+				c->hw.blk_off + cfg->sblk->spr.base,
+				c->hw.blk_off + cfg->sblk->spr.base +
+				cfg->sblk->spr.len, c->hw.xin_id);
+	}
 	return c;
 
 blk_init_error: