Add back the llvm-ar P flag

The P flag is supported as of llvm r354044, add back the flag to reduce
the size of intermediate archieve files. This does not affect the final
binaries.

Test: build
Bug: 71618641
Change-Id: I4021aec783ba341768893392b73b976c1fa5bdf7

core/aux_config.mk

@@ -32,7 +32,7 @@ endif
 
 # setup AUX globals
 AUX_SHLIB_SUFFIX := .so
-AUX_GLOBAL_ARFLAGS := cqsD
+AUX_GLOBAL_ARFLAGS := crsPD
 AUX_STATIC_LIB_SUFFIX := .a
 
 # Load ever-lasting "indexed" version of AUX variant environment; it is treated as READ-ONLY from this

core/combo/select.mk

@@ -28,7 +28,7 @@ combo_var_prefix := $(combo_2nd_arch_prefix)$(combo_target)
 
 # Set reasonable defaults for the various variables
 
-$(combo_var_prefix)GLOBAL_ARFLAGS := cqsD -format=gnu
+$(combo_var_prefix)GLOBAL_ARFLAGS := crsPD -format=gnu
 
 $(combo_var_prefix)STATIC_LIB_SUFFIX := .a