grove: initial groveLED implementation and move to maa 0.2.2 api

Signed-off-by: Brendan Le Foll <brendan.le.foll@intel.com>

src/hmc5883l/hmc5883l.cxx

@@ -77,9 +77,9 @@
 
 using namespace upm;
 
-Hmc5883l::Hmc5883l()
+Hmc5883l::Hmc5883l(int bus)
 {
-    m_i2c = maa_i2c_init();
+    m_i2c = maa_i2c_init(bus);
 
     maa_i2c_address(m_i2c, HMC5883L_I2C_ADDR);
     m_rx_tx_buf[0] = HMC5883L_CONF_REG_B;

src/hmc5883l/hmc5883l.h

@@ -32,7 +32,7 @@ namespace upm {
 class Hmc5883l {
 public:
     /// Creates a Hmc5883l object
-    Hmc5883l();
+    Hmc5883l(int bus);
 
     /// Returns the direction
     float direction();