ec_commands: Move #ifdef to encompass more code

To generate kernel ec_commands.h as lean as possible, include comments
within #ifdef.

BUG=chromium:945948
BRANCH=none
TEST=compile

Change-Id: I23e48aa68c456ac09e8418f80993e952043111f6
Signed-off-by: Gwendal Grignou <gwendal@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/1559379
Commit-Ready: ChromeOS CL Exonerator Bot <chromiumos-cl-exonerator@appspot.gserviceaccount.com>
Reviewed-by: Randall Spangler <rspangler@chromium.org>

include/ec_commands.h

@@ -16,12 +16,12 @@
 extern "C"{
 #endif
 
+#ifdef CHROMIUM_EC
 /*
  * Include common.h for CONFIG_HOSTCMD_ALIGNED, if it's defined. This
  * generates more efficient code for accessing request/response structures on
  * ARM Cortex-M if the structures are guaranteed 32-bit aligned.
  */
-#ifdef CHROMIUM_EC
 #include "common.h"
 #endif
 
@@ -401,6 +401,7 @@ extern "C"{
  */
 #ifndef __ACPI__
 
+#ifndef __KERNEL__
 /*
  * Define __packed if someone hasn't beat us to it.  Linux kernel style
  * checking prefers __packed over __attribute__((packed)).
@@ -412,6 +413,7 @@ extern "C"{
 #ifndef __aligned
 #define __aligned(x) __attribute__((aligned(x)))
 #endif
+#endif  /* __KERNEL__ */
 
 /*
  * Attributes for EC request and response packets.  Just defining __packed