[Core] IS31FL3731/36/37 bug fix (#10612)

* 3731 bug fix

* bug fixes

drivers/issi/is31fl3731.c

@@ -233,4 +233,5 @@ void IS31FL3731_update_led_control_registers(uint8_t addr, uint8_t index) {
             IS31FL3731_write_register(addr, i, g_led_control_registers[index][i]);
         }
     }
+    g_led_control_registers_update_required[index] = false;
 }

drivers/issi/is31fl3736.c

@@ -264,5 +264,6 @@ void IS31FL3736_update_led_control_registers(uint8_t addr1, uint8_t addr2) {
             IS31FL3736_write_register(addr1, i, g_led_control_registers[0][i]);
             // IS31FL3736_write_register(addr2, i, g_led_control_registers[1][i]);
         }
+        g_led_control_registers_update_required = false;
     }
 }

drivers/issi/is31fl3737.c

@@ -218,5 +218,6 @@ void IS31FL3737_update_led_control_registers(uint8_t addr1, uint8_t addr2) {
             IS31FL3737_write_register(addr1, i, g_led_control_registers[0][i]);
             // IS31FL3737_write_register(addr2, i, g_led_control_registers[1][i]);
         }
+        g_led_control_registers_update_required = false;
     }
 }