[PMIC][TPS659038] Fix ES1.1 ID detection

It seems that DRA7-EVMs with latest ES1.1 PMICs have a different IDCODE.
These PMIC variants are populated on Rev G+platforms which have ES1.1 of
DRA75x populated.

So, fix it in presence detection.

Signed-off-by: Shilpa Byrichetty <shilpab@spectrumdigital.com>
[nm@ti.com: convert original change to a proper patch]
Signed-off-by: Nishanth Menon <nm@ti.com>