ARM: dts: msm: Fix UART clock reference for sdxpoorwills

UART registers starts the numbering from 0
so UART2 is the third instance which is BLSP1 UART3 clock.

CRs-Fixed: 2135284
Change-Id: Id94930ae8c1d4e68e1883eb54b3c7cb944d5ac09
Signed-off-by: Vicky Wallace <vwallace@codeaurora.org>
1 file changed