build: Set QCOM global cflags for secondary arch

Change-Id: I637d94f9b0ddee2c8d6057de44355e482163dd36

(cherry picked from commit 83bac04f9b0d946856d3469f747eb43c1239ccdf)
build: Fix copypasta in 2nd target clang flags

Change-Id: Ieedce8754b145e53d72a5d6a4b41fbe5cdf6473f

(cherry picked from commit 240ce53dc8c2c18035e6f83b48aa662ab6a589dd)