[HAL][LPC176x] Pull out framework into separate repository

Framework and build platform now located at https://github.com/p3p/pio-framework-arduino-lpc176x and https://github.com/p3p/pio-nxplpc-arduino-lpc176x respectively

fix mkssbase leds

move hardware serial

remove hardware/software serial

Hardware Serial extraction

HardwareSerial ISRs

fix disabled serial2 causing Serial object to link

move usb devices out to framework

separate out adc/pwm peripheral function from hal.cpp

fix includes

remove unused pwm init

move adc

HAL header update

templated filtered adc

LPC1769 platform

Marlin/src/HAL/HAL_LPC1768/MarlinSerial.h

@@ -0,0 +1,71 @@
+/**
+ * Marlin 3D Printer Firmware
+ * Copyright (C) 2016 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ *
+ * Based on Sprinter and grbl.
+ * Copyright (C) 2011 Camiel Gubbels / Erik van der Zalm
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#ifndef MARLINSERIAL_H
+#define MARLINSERIAL_H
+#include <HardwareSerial.h>
+#include <WString.h>
+
+#include "../../inc/MarlinConfigPre.h"
+#if ENABLED(EMERGENCY_PARSER)
+  #include "../../feature/emergency_parser.h"
+#endif
+
+#ifndef SERIAL_PORT
+  #define SERIAL_PORT 0
+#endif
+
+#ifndef RX_BUFFER_SIZE
+  #define RX_BUFFER_SIZE 128
+#endif
+#ifndef TX_BUFFER_SIZE
+  #define TX_BUFFER_SIZE 32
+#endif
+
+class MarlinSerial : public HardwareSerial<RX_BUFFER_SIZE, TX_BUFFER_SIZE> {
+public:
+  MarlinSerial(LPC_UART_TypeDef *UARTx) :
+    HardwareSerial<RX_BUFFER_SIZE, TX_BUFFER_SIZE>(UARTx)
+    #if ENABLED(EMERGENCY_PARSER)
+       , emergency_state(EmergencyParser::State::EP_RESET)
+    #endif
+    {
+    }
+
+  #if ENABLED(EMERGENCY_PARSER)
+    bool recv_callback(const char c) override {
+      emergency_parser.update(emergency_state, c);
+      return true; // do not discard character
+    }
+  #endif
+
+  #if ENABLED(EMERGENCY_PARSER)
+    EmergencyParser::State emergency_state;
+  #endif
+};
+
+extern MarlinSerial MSerial;
+extern MarlinSerial MSerial1;
+extern MarlinSerial MSerial2;
+extern MarlinSerial MSerial3;
+
+#endif // MARLINSERIAL_H