Enable ARM32 in src/Reactor/BUILD.gn
Enable ARM32 in src/Reactor/BUILD.gn

Bug b/114402930

Change-Id: I228222003e5f015e4966eacc32094a48a7054d0f
Reviewed-on: https://swiftshader-review.googlesource.com/c/22988
Reviewed-by: Nicolas Capens <51edc787c30f24c4904e8ffbb5523c3a9f7a451d@google.com>
Tested-by: Kevin Schoedel <b666f31dbc5278ca2bc7ccfd1aadb405343a2e6a@google.com>

bkaradzic/SwiftShader,bkaradzic/SwiftShader,bkaradzic/SwiftShader,google/swiftshader,google/swiftshader,bkaradzic/SwiftShader,bkaradzic/SwiftShader,google/swiftshader