ARM: imx6q: clk: Change hsi_tx clock to be a shared clock gate

The CG8 field of the CCM CCGR3 register is named as 'mipi_core_cfg'
clock, according to the i.MX6q/sdl reference manuals.  This clock is
actually the gate for several clocks, including the hsi_tx_sel clock's
output and the video_27m clock's output.  So, this patch changes the
hsi_tx clock to be a shared clock gate.
Suggested-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Liu Ying <Ying.Liu@freescale.com>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>

arch/arm/mach-imx/clk-imx6q.c

@@ -119,6 +119,7 @@ static unsigned int share_count_asrc;
 static unsigned int share_count_ssi1;
 static unsigned int share_count_ssi2;
 static unsigned int share_count_ssi3;
+static unsigned int share_count_mipi_core_cfg;
 
 static void __init imx6q_clocks_init(struct device_node *ccm_node)
 {
@@ -416,7 +417,7 @@ static void __init imx6q_clocks_init(struct device_node *ccm_node)
 	clk[IMX6QDL_CLK_LDB_DI0]      = imx_clk_gate2("ldb_di0",       "ldb_di0_podf",      base + 0x74, 12);
 	clk[IMX6QDL_CLK_LDB_DI1]      = imx_clk_gate2("ldb_di1",       "ldb_di1_podf",      base + 0x74, 14);
 	clk[IMX6QDL_CLK_IPU2_DI1]     = imx_clk_gate2("ipu2_di1",      "ipu2_di1_sel",      base + 0x74, 10);
-	clk[IMX6QDL_CLK_HSI_TX]       = imx_clk_gate2("hsi_tx",        "hsi_tx_podf",       base + 0x74, 16);
+	clk[IMX6QDL_CLK_HSI_TX]       = imx_clk_gate2_shared("hsi_tx", "hsi_tx_podf",       base + 0x74, 16, &share_count_mipi_core_cfg);
 	if (cpu_is_imx6dl())
 		/*
 		 * The multiplexer and divider of the imx6q clock gpu2d get