Change MTU2 channel number for LPTicker of GR-LYCHEE

MTU2(Multi function Timer pulse Unit 2) can create the low freaquency.
Currently GR-LYCHEE uses MTU2 channel 3 for LPTicker, but I noticed that a part of it is used by another function.
Thus, I changed MTU2 channel number for LPTicker to 2.

Author: TomoYamanaka

targets/TARGET_RENESAS/TARGET_RZ_A1XX/TARGET_GR_LYCHEE/PeripheralPins.c

@@ -246,10 +246,11 @@ const PinMap PinMap_PWM[] = {
     {P7_9  , PWM_TIOC1A, 6},
     {P9_2  , PWM_TIOC1A, 5}, /* for 208QFP */
     {P2_7  , PWM_TIOC1A, 3},
-    {P5_14 , PWM_TIOC2A, 4},
-    {P7_0  , PWM_TIOC2A, 5},
-    {P9_4  , PWM_TIOC2A, 5}, /* for 208QFP */
-    {P2_6  , PWM_TIOC2A, 3},
+    {P6_7  , PWM_TIOC3A, 5},
+    {P2_5  , PWM_TIOC3A, 3},
+    {P3_11 , PWM_TIOC3A, 3},
+    {P6_9  , PWM_TIOC3C, 5},
+    {P3_12 , PWM_TIOC3C, 3},
     {P5_8  , PWM_TIOC4A, 3},
     {P2_4  , PWM_TIOC4A, 3},
     {P5_10 , PWM_TIOC4C, 3},

targets/TARGET_RENESAS/TARGET_RZ_A1XX/TARGET_GR_LYCHEE/mbed_drv_cfg.h

@@ -34,7 +34,7 @@
 
 #define RENESAS_RZ_A1_P0_CLK   CM1_RENESAS_RZ_A1_P0_CLK
 
-#define LP_TICKER_MTU2_CH      3
+#define LP_TICKER_MTU2_CH      2
 
 /* flash (W25Q64JV) */
 #define FLASH_BASE                 (0x18000000UL) /**< Flash Base Address */