hardware::ErgoDox: Only compile the plugin when building for ErgoDox

With moving to a monorepo, the plugin will always be compiled, so we want to
guard ourselves, to only compile when building for the ErgoDox. We do this with
an `#ifdef ARDUINO_AVR_ERGODOX` guard.

Signed-off-by: Gergely Nagy <algernon@keyboard.io>

src/kaleidoscope/hardware/ErgoDox.cpp

@@ -24,6 +24,8 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
+#ifdef ARDUINO_AVR_ERGODOX
+
 #include <Kaleidoscope.h>
 #include <KeyboardioHID.h>
 #include <avr/wdt.h>
@@ -248,3 +250,5 @@ uint8_t ErgoDox::pressedKeyswitchCount() {
 
 HARDWARE_IMPLEMENTATION KeyboardHardware;
 kaleidoscope::hardware::ErgoDox &ErgoDox = KeyboardHardware;
+
+#endif

src/kaleidoscope/hardware/ErgoDox.h

@@ -25,6 +25,8 @@
 
 #pragma once
 
+#ifdef ARDUINO_AVR_ERGODOX
+
 #include <Arduino.h>
 
 #include "kaleidoscope/hardware/ErgoDox/ErgoDoxScanner.h"
@@ -285,3 +287,5 @@ constexpr byte R5C12 = keyIndex(5, 12);
 constexpr byte R5C13 = keyIndex(5, 13);
 
 extern kaleidoscope::hardware::ErgoDox &ErgoDox;
+
+#endif

src/kaleidoscope/hardware/ErgoDox/ErgoDoxScanner.cpp

@@ -23,6 +23,8 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
+#ifdef ARDUINO_AVR_ERGODOX
+
 #include "kaleidoscope/hardware/ErgoDox/ErgoDoxScanner.h"
 #include <avr/wdt.h>
 #include "kaleidoscope/hardware/ErgoDox/i2cmaster.h"
@@ -200,3 +202,5 @@ ErgoDoxScanner::reattachExpanderOnError() {
 
 }
 }
+
+#endif

src/kaleidoscope/hardware/ErgoDox/ErgoDoxScanner.h

@@ -25,6 +25,8 @@
 
 #pragma once
 
+#ifdef ARDUINO_AVR_ERGODOX
+
 #include <Arduino.h>
 
 namespace kaleidoscope {
@@ -50,3 +52,5 @@ class ErgoDoxScanner {
 
 }
 }
+
+#endif

src/kaleidoscope/hardware/ErgoDox/i2cmaster.cpp

@@ -6,6 +6,9 @@
 * Target:   any AVR device with hardware TWI
 * Usage:    API compatible with I2C Software Library i2cmaster.h
 **************************************************************************/
+
+#ifdef ARDUINO_AVR_ERGODOX
+
 #include <inttypes.h>
 #include <compat/twi.h>
 
@@ -196,3 +199,5 @@ unsigned char i2c_readNak(void) {
   return TWDR;
 
 }/* i2c_readNak */
+
+#endif

src/kaleidoscope/hardware/ErgoDox/i2cmaster.h

@@ -9,6 +9,8 @@
 * Usage:    see Doxygen manual
 **************************************************************************/
 
+#ifdef ARDUINO_AVR_ERGODOX
+
 #ifdef DOXYGEN
 /**
  @defgroup pfleury_ic2master I2C Master library
@@ -174,3 +176,5 @@ extern unsigned char i2c_read(unsigned char ack);
 
 
 /**@}*/
+
+#endif