msm: ipa: export msm_ipa.h for user-space inclusion

This header defines IOCTLs and related types needed
by user-space code to interact with IPA kernel driver

Change-Id: I867f15bd539d388e018a95b48206f623d72b098d
Signed-off-by: Ravi Gummadidala <rgummadi@codeaurora.org>
diff --git a/include/linux/Kbuild b/include/linux/Kbuild
index 06772d9..ee42cb2 100644
--- a/include/linux/Kbuild
+++ b/include/linux/Kbuild
@@ -450,3 +450,4 @@
 header-y += ci-bridge-spi.h
 header-y += msm_audio_amrwbplus.h
 header-y += avtimer.h
+header-y += msm_ipa.h