staging: iio: adc: lpc32xx: use correct reutrn value
staging: iio: adc: lpc32xx: use correct reutrn value

To lpc32xx_adc driver, when platform_get_resource or
platform_get_irq failed, we should use -ENXIO as a
return value, but not -EBUSY.

Signed-off-by: Peng Fan <7351ee4254d3ae583dd8772c904897a231cf4948@gmail.com>
Cc: Jonathan Cameron <09f65b71b7655725897b2fd41a09a0cefe2e1ace@kernel.org>
Cc: Hartmut Knaack <4bccb8448924141fc676c25eb657b52ee47a361d@gmx.de>
Cc: Lars-Peter Clausen <3318dc5ce3e4fb7c28a0b841b6801c884e1d0896@metafoo.de>
Cc: Peter Meerwald <a2c19d57d338d8f9d8de092166164455662a8cbe@pmeerw.net>
Cc: Greg Kroah-Hartman <4645f7897fd33786a2ee1264d590b3c400559d85@linuxfoundation.org>
Cc: Tapasweni Pathak <3b69268f7ace5bdf0735d0c2203b969d339216e4@gmail.com>
Signed-off-by: Jonathan Cameron <09f65b71b7655725897b2fd41a09a0cefe2e1ace@kernel.org>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs