staging: omap-thermal: update OMAP54xx conv_table

This patch updates the ADC conversion table for OMAP5430 ES2.0 devices.

Signed-off-by: Radhesh Fadnis <radhesh.fadnis@ti.com>
Signed-off-by: Eduardo Valentin <eduardo.valentin@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>