clk: imx93: add SAI IPG clk

The clk topology is as below:
bus_aon_root------>\                  /--->SAI IPG
                    -->SAI LPCG gate-->
sai[x]_clk_root--->/                  \--->SAI MCLK

So use shared count as i.MX93 MU_B gate.

Signed-off-by: Peng Fan <peng.fan@nxp.com>
Reviewed-by: Abel Vesa <abel.vesa@linaro.org>
Signed-off-by: Abel Vesa <abel.vesa@linaro.org>
Link: https://lore.kernel.org/r/20220830033137.4149542-9-peng.fan@oss.nxp.com

Author: MrVan

drivers/clk/imx/clk-imx93.c

@@ -28,6 +28,9 @@ enum clk_sel {
 	MAX_SEL
 };
 
+static u32 share_count_sai1;
+static u32 share_count_sai2;
+static u32 share_count_sai3;
 static u32 share_count_mub;
 
 static const char *parent_names[MAX_SEL][4] = {
@@ -215,9 +218,12 @@ static const struct imx93_clk_ccgr {
 	{ IMX93_CLK_USDHC1_GATE,	"usdhc1",	"usdhc1_root",		0x9380, },
 	{ IMX93_CLK_USDHC2_GATE,	"usdhc2",	"usdhc2_root",		0x93c0, },
 	{ IMX93_CLK_USDHC3_GATE,	"usdhc3",	"usdhc3_root",		0x9400, },
-	{ IMX93_CLK_SAI1_GATE,		"sai1",		"sai1_root",		0x9440, },
-	{ IMX93_CLK_SAI2_GATE,		"sai2",		"sai2_root",		0x9480, },
-	{ IMX93_CLK_SAI3_GATE,		"sai3",		"sai3_root",		0x94c0, },
+	{ IMX93_CLK_SAI1_GATE,          "sai1",         "sai1_root",            0x9440, 0, &share_count_sai1},
+	{ IMX93_CLK_SAI1_IPG,		"sai1_ipg_clk", "bus_aon_root",		0x9440, 0, &share_count_sai1},
+	{ IMX93_CLK_SAI2_GATE,          "sai2",         "sai2_root",            0x9480, 0, &share_count_sai2},
+	{ IMX93_CLK_SAI2_IPG,		"sai2_ipg_clk", "bus_wakeup_root",	0x9480, 0, &share_count_sai2},
+	{ IMX93_CLK_SAI3_GATE,          "sai3",         "sai3_root",            0x94c0, 0, &share_count_sai3},
+	{ IMX93_CLK_SAI3_IPG,		"sai3_ipg_clk", "bus_wakeup_root",	0x94c0, 0, &share_count_sai3},
 	{ IMX93_CLK_MIPI_CSI_GATE,	"mipi_csi",	"media_apb_root",	0x9580, },
 	{ IMX93_CLK_MIPI_DSI_GATE,	"mipi_dsi",	"media_apb_root",	0x95c0, },
 	{ IMX93_CLK_LVDS_GATE,		"lvds",		"media_ldb_root",	0x9600, },