disp: msm: sde: add support for display emulation on RUMI.

Add support display emulation targets on RUMI

This change does the following:
-parse dt node to enable display emulation mode.
-use sde_reg_read for pool timeout ops and debug fs dump.
-increases the kickoff timeout when emulation is enabled.
-bypass AXI halt operation when emulation is enabled.

Change-Id: Idc493964c0b8fc89f5d85fcc5755e0874a12d211
Signed-off-by: Amine Najahi <quic_anajahi@quicinc.com>

msm/sde/sde_hw_pingpong.c

@@ -247,16 +247,13 @@ static int sde_hw_pp_poll_timeout_wr_ptr(struct sde_hw_pingpong *pp,
 {
 	struct sde_hw_blk_reg_map *c;
 	u32 val;
-	int rc;
 
 	if (!pp)
 		return -EINVAL;
 
 	c = &pp->hw;
-	rc = readl_poll_timeout(c->base_off + c->blk_off + PP_LINE_COUNT,
-			val, (val & 0xffff) >= 1, 10, timeout_us);
-
-	return rc;
+	return read_poll_timeout(sde_reg_read, val, (val & 0xffff) >= 1,
+					10, false, timeout_us, c, PP_LINE_COUNT);
 }
 
 static void sde_hw_pp_dsc_enable(struct sde_hw_pingpong *pp)