arm: socfpga: Fix QSPI doesn't work on socdk board

Updated pinmux group MIXED1IO[15-20] for QSPI.
Updated QSPI clock.

Signed-off-by: shengjiangwu <shengjiangwu@icloud.com>
Cc: Chin Liang See <clsee@altera.com>
Cc: Dinh Nguyen <dinguyen@opensource.altera.com>
Cc: Dinh Nguyen <dinh.linux@gmail.com>
Cc: Pavel Machek <pavel@denx.de>
Cc: Marek Vasut <marex@denx.de>
Cc: Stefan Roese <sr@denx.de>

board/altera/cyclone5-socdk/qts/pinmux_config.h

@@ -87,12 +87,12 @@ const u8 sys_mgr_init_table[] = {
 	2, /* MIXED1IO12 */
 	2, /* MIXED1IO13 */
 	0, /* MIXED1IO14 */
-	1, /* MIXED1IO15 */
-	1, /* MIXED1IO16 */
-	1, /* MIXED1IO17 */
-	1, /* MIXED1IO18 */
-	0, /* MIXED1IO19 */
-	0, /* MIXED1IO20 */
+	3, /* MIXED1IO15 */
+	3, /* MIXED1IO16 */
+	3, /* MIXED1IO17 */
+	3, /* MIXED1IO18 */
+	3, /* MIXED1IO19 */
+	3, /* MIXED1IO20 */
 	0, /* MIXED1IO21 */
 	0, /* MIXED2IO0 */
 	0, /* MIXED2IO1 */

board/altera/cyclone5-socdk/qts/pll_config.h

@@ -14,7 +14,7 @@
 #define CONFIG_HPS_MAINPLLGRP_MPUCLK_CNT 0
 #define CONFIG_HPS_MAINPLLGRP_MAINCLK_CNT 0
 #define CONFIG_HPS_MAINPLLGRP_DBGATCLK_CNT 0
-#define CONFIG_HPS_MAINPLLGRP_MAINQSPICLK_CNT 511
+#define CONFIG_HPS_MAINPLLGRP_MAINQSPICLK_CNT 3
 #define CONFIG_HPS_MAINPLLGRP_MAINNANDSDMMCCLK_CNT 511
 #define CONFIG_HPS_MAINPLLGRP_CFGS2FUSER0CLK_CNT 15
 #define CONFIG_HPS_MAINPLLGRP_MAINDIV_L3MPCLK 1