The macro name for enable3 pin is named as AS3722_EXT_CONTROL_PIN_ENABLE2
which is conflict with the enable2 pin.

Correct this macro name to correctly reflect the enable pin i.e.
AS3722_EXT_CONTROL_PIN_ENABLE3.
Signed-off-by: NLaxman Dewangan <ldewangan@nvidia.com>
Reported-by: NDan Willemsen <dwillemsen@nvidia.com>
Signed-off-by: NLee Jones <lee.jones@linaro.org>