Fixed misleading indent warning in bcm2835.c

[rmullin7286]

Previously when compiling with the bcm2835/RPi driver gcc would emit the following warnings:

utility/RPi/bcm2835.c: In function ‘bcm2835_gpio_pad’:
utility/RPi/bcm2835.c:420:3: warning: this ‘if’ clause does not guard... [-Wmisleading-indentation]
if (bcm2835_pads == MAP_FAILED)
^~
utility/RPi/bcm2835.c:423:5: note: ...this statement, but the latter is misleadingly indented as if it is 
guarded by the ‘if’
volatile uint32_t* paddr = bcm2835_pads + BCM2835_PADS_GPIO_0_27/4 + group;
^~~~~~~~
utility/RPi/bcm2835.c: In function ‘bcm2835_gpio_set_pad’:
utility/RPi/bcm2835.c:433:3: warning: this ‘if’ clause does not guard... [-Wmisleading-indentation]
if (bcm2835_pads == MAP_FAILED)
^~
utility/RPi/bcm2835.c:436:5: note: ...this statement, but the latter is misleadingly indented as if it is 
guarded by the ‘if’
volatile uint32_t* paddr = bcm2835_pads + BCM2835_PADS_GPIO_0_27/4 + group;

This was caused by a simple misplaced indent in the two functions mentioned. These indents were removed and the compiler no longer emits these warnings.

[Avamander]

Thanks!