build: update qcom_utils.mk

This is a combination of 2 commits.

commit 65849f502ad3e16f6916ddc640d4305c36b7bebc
Author: Jake Weinstein <xboxfanj@msn.com>
Date:   Sat Sep 14 13:10:43 2013 -0500

    Build: update qcom_utils.mk

    Add build macro to determine Android Release

    Adding platform sdk version 18 for JB MR2.

    Change-Id: I79aa831ddd335bd14bd777506c210acc5d9960f1

commit 677d8efcb831b4b29c5bb5123897943870a55627
Author: andrew.boren <andrew.boren@gmail.com>
Date:   Sat May 18 22:15:13 2013 -0700

    qcom_utils: Add qsd8k to qcom platforms

    PS2: fix typo

    Change-Id: Id85569d1dd7be2f4c0620827da6d89e63b658aa9

Change-Id: I58d70c079c6ec2c76ab7fc169664f1e4c55fb552
Merge "build: update qcom_utils.mk" into android-4.3