ARM: dts: msm: Add the pmfalcon and pm2falcon dtsi files

Add the device nodes for the following peripherals -
pmfalcon - RevID, PON, GPIO, COINCELL, RTC
pm2falcon - RevID, PON, GPIO, PWM, LED, WLED, FLASH

CRs-Fixed: 1070059
Change-Id: I0159eccab5a6263d61e1a226f320212d94bfee7e
Signed-off-by: ansharma <ansharma@codeaurora.org>