memory: Hide all copy/assignment ops for class w/heap allocation

Many of the UPM libraries allocate space on the heap but do not
explicitly handle copying and assignment.  This commit uses C++11 delete
to forbit both the copy and assignment operator for these classes.

The C++ examples which used assignment operators to initialize class
instances were also updated since it did not appear necessary in those
cases to use the assignment operator.

Signed-off-by: Noel Eck <noel.eck@intel.com>

src/lp8860/lp8860.hpp

@@ -65,6 +65,10 @@ public:
    void setBrightness(int dutyPercent);
 
 private:
+   /* Disable implicit copy and assignment operators */
+   LP8860(const LP8860&) = delete;
+   LP8860 &operator=(const LP8860&) = delete;
+
    void i2cWriteByte(int reg, int value);
    void i2cWriteBuffer(int reg, uint8_t* buf, int length);
    uint8_t i2cReadByte(uint8_t reg);