Update Inkplate6plus.cpp

Fixed enabling of frontlight at waking up Inkplate 6PLUS.

Author: gogi640

src/boards/Inkplate6plus.cpp

@@ -156,7 +156,7 @@ bool Inkplate::begin(void)
 
     // Disable/Enable Frontlight PWR
     pinModeInternal(MCP23017_INT_ADDR, mcpRegsInt, FRONTLIGHT_EN, OUTPUT);
-    digitalWriteInternal(MCP23017_INT_ADDR, mcpRegsInt, FRONTLIGHT_EN, HIGH);
+    digitalWriteInternal(MCP23017_INT_ADDR, mcpRegsInt, FRONTLIGHT_EN, LOW);
 
     DMemoryNew = (uint8_t *)ps_malloc(E_INK_WIDTH * E_INK_HEIGHT / 8);
     _partial = (uint8_t *)ps_malloc(E_INK_WIDTH * E_INK_HEIGHT / 8);