Add bionic's scsi headers to the include path.

Bug: N/A (hit while upgrading strace to 4.17)
Test: builds
Change-Id: Ia98daf9563a788588827d43c17573896e4ec6f5a
diff --git a/cc/config/global.go b/cc/config/global.go
index 997256e..195b482 100644
--- a/cc/config/global.go
+++ b/cc/config/global.go
@@ -175,6 +175,7 @@
 		"-isystem bionic/libc/include",
 		"-isystem bionic/libc/kernel/uapi",
 		"-isystem bionic/libc/kernel/uapi/asm-" + kernelArch,
+		"-isystem bionic/libc/kernel/android/scsi",
 		"-isystem bionic/libc/kernel/android/uapi",
 	}, " ")
 }