Add support for Olimex ESP32-POE-WROVER.

There is a version of the Olimex ESP32-POE board with an ESP32-WROVER
module which has a the ethernet clock connected to a different IO than
the version with an ESP32-WROOM module.

This commit adds a new runtime selectable variant for the WROVER version.

wled00/const.h

@@ -292,7 +292,7 @@
 #define BTN_TYPE_TOUCH_SWITCH     9
 
 //Ethernet board types
-#define WLED_NUM_ETH_TYPES       11
+#define WLED_NUM_ETH_TYPES        12
 
 #define WLED_ETH_NONE              0
 #define WLED_ETH_WT32_ETH01        1
@@ -305,6 +305,7 @@
 #define WLED_ETH_QUINLED_OCTA      8
 #define WLED_ETH_ABCWLEDV43ETH     9
 #define WLED_ETH_SERG74           10
+#define WLED_ETH_ESP32_POE_WROVER 11
 
 //Hue error codes
 #define HUE_ERROR_INACTIVE        0

wled00/data/settings_wifi.htm

@@ -215,6 +215,7 @@
 				<option value="0">None</option>
 				<option value="9">ABC! WLED V43 & compatible</option>
 				<option value="2">ESP32-POE</option>
+				<option value="11">ESP32-POE-WROVER</option>
 				<option value="6">ESP32Deux</option>
 				<option value="7">KIT-VE</option>
 				<option value="8">QuinLED-Dig-Octa & T-ETH-POE</option>

wled00/network.cpp

@@ -123,6 +123,16 @@ const ethernet_settings ethernetBoards[] = {
     18,                   // eth_mdio,
     ETH_PHY_LAN8720,      // eth_type,
     ETH_CLOCK_GPIO17_OUT  // eth_clk_mode
+  },
+
+  // ESP32-POE-WROVER
+  {
+    0,                    // eth_address,
+    12,                   // eth_power,
+    23,                   // eth_mdc,
+    18,                   // eth_mdio,
+    ETH_PHY_LAN8720,      // eth_type,
+    ETH_CLOCK_GPIO0_OUT   // eth_clk_mode
   }
 };
 #endif