OLIMEXINO - Initial support for the OLIMEXINO board.

PWM and ADC configuration is the same as the naze32 for now.  Requires an accelerometer is connected via I2C2.
I2C signals SDA2 and SCL2 are on the UEXT header (Pins 6 and 5 respectively)
USART signals TX and RX are on the CON3/CON4 headers (TX = D7, RX = D8)
Onboard LEDs (LED1/LED2) working.
Buzzer support removed for now as it conflicted with PWM map and LEDs.
mma845x support disabled as it conflicted with an LED.
Relocated some NAZE specific comments.

git-svn-id: https://afrodevices.googlecode.com/svn/trunk/baseflight@302 7c89a4a9-59b9-e629-4cfe-3a2d53b20e61

src/drv_pwm.c

@@ -48,7 +48,7 @@
     PWM5..8 used for motors
     PWM9..10 used for servo or else motors
     PWM11..14 used for motors
-    
+
     2) multirotor PPM input with more servos
     PWM1 used for PPM
     PWM5..8 used for motors
@@ -352,7 +352,7 @@ void TIM1_CC_IRQHandler(void)
 static void pwmTIMxHandler(TIM_TypeDef *tim, uint8_t portBase)
 {
     int8_t port;
-    
+
     // Generic CC handler for TIM2,3,4
     if (TIM_GetITStatus(tim, TIM_IT_CC1) == SET) {
         port = portBase + 0;
@@ -449,6 +449,12 @@ bool pwmInit(drv_pwm_config_t *init)
         if (setup[i] == 0xFF) // terminator
             break;
 
+#ifdef OLIMEXINO
+        // PWM2 is connected to LED2 on the board and cannot be connected.
+        if (port == PWM2)
+            continue;
+#endif
+
         // skip UART ports for GPS
         if (init->useUART && (port == PWM3 || port == PWM4))
             continue;