omap: McBSP: Make the free variable update more readable

Using true/false instead of 1/0 to update the free variable.
Signed-off-by: Shubhrajyoti D <shubhrajyoti@ti.com>
Acked-by: Jarkko Nikula <jhnikula@gmail.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

arch/arm/plat-omap/mcbsp.c

@@ -755,7 +755,7 @@ int omap_mcbsp_request(unsigned int id)
 		goto err_kfree;
 	}
 
-	mcbsp->free = 0;
+	mcbsp->free = false;
 	mcbsp->reg_cache = reg_cache;
 	spin_unlock(&mcbsp->lock);
 
@@ -815,7 +815,7 @@ int omap_mcbsp_request(unsigned int id)
 	clk_disable(mcbsp->iclk);
 
 	spin_lock(&mcbsp->lock);
-	mcbsp->free = 1;
+	mcbsp->free = true;
 	mcbsp->reg_cache = NULL;
 err_kfree:
 	spin_unlock(&mcbsp->lock);
@@ -858,7 +858,7 @@ void omap_mcbsp_free(unsigned int id)
 	if (mcbsp->free)
 		dev_err(mcbsp->dev, "McBSP%d was not reserved\n", mcbsp->id);
 	else
-		mcbsp->free = 1;
+		mcbsp->free = true;
 	mcbsp->reg_cache = NULL;
 	spin_unlock(&mcbsp->lock);
 
@@ -1771,7 +1771,7 @@ static int __devinit omap_mcbsp_probe(struct platform_device *pdev)
 
 	spin_lock_init(&mcbsp->lock);
 	mcbsp->id = id + 1;
-	mcbsp->free = 1;
+	mcbsp->free = true;
 	mcbsp->dma_tx_lch = -1;
 	mcbsp->dma_rx_lch = -1;