improve hardware.h documentation

Change-Id: I637a1d8924af144a9c2cc4645659e9d23e9527d6
am 2d1e978e: improve hardware.h documentation
am caf9528e: am 2d1e978e: improve hardware.h documentation
Add a gralloc usage flag for external displays.

This change adds a gralloc usage flag to indicate that a buffer should
be displayed full-screen on an external display if one is present.

Change-Id: I3230a8dd2c49c89c81bf0ee9e646a448028bda2e
Update the docs for the private pixel formats.

Change-Id: I337d9e7ba7f3a625294398790844c6d15ee75237
update rotation-vector documentation.

the rotation-vector sensor must transmit the W component of the
unit quaternion in data[4].
This change doesn't cause a compatibility issue because nothing in the
system relies on the W component being present.

Change-Id: If4f699ac8d41d8b957925b375e355a138a82dcf8
Hardware Composer add const for handle pointer

Change-Id: Icf53be12ed43bce19b152fa7f1dee104d713b8da
am 2ec21933: Update the docs for the private pixel formats.

* commit '2ec2193365ab26c6f77a2c5617887ced7a8d6711':
  Update the docs for the private pixel formats.
am 2d17786b: am 2ec21933: Update the docs for the private pixel formats.

* commit '2d17786be760f473b2a05f5ab48f82cc463c860b':
  Update the docs for the private pixel formats.
Merge "update rotation-vector documentation." into gingerbread
am 3cceacee: Merge "update rotation-vector documentation." into gingerbread

* commit '3cceaceecac1e76244153940b8855ad1bbdd1037':
  update rotation-vector documentation.
am 778ab436: am 3cceacee: Merge "update rotation-vector documentation." into gingerbread

* commit '778ab436dee2918ae2fa083f4afa4ba68dc39235':
  update rotation-vector documentation.
const native_handle_t* -> buffer_handle_t

Change-Id: If4ac1bcfba7192ac1339039cac75f76a5c09f4c6
gralloc: add padding to alloc_device_t and hwc_composer_device_t

also adds version #defines

Change-Id: I89f19fc7811ea9c9efb579a9f6abb4c3d9011bbf
gralloc: add dump hooks to gralloc/hwcomposer

Change-Id: I27bf46103b4d1d547c42a6de4f3270a6dfd7b7ec
gralloc: Fix division-by-0 during system emulation.

This patch avoids a division-by-0 when the system is running
under emulation (the kernel driver reports pixclock as 0, for
some reason). Which results in a SIGFPE during the boot sequence.

Change-Id: Idb6bcdd58999ea9231f2411481c25929d5d02f1d
am 80d3699c: gralloc: Fix division-by-0 during system emulation.

* commit '80d3699c9e8e18d57684f3b20d58fd259379a9d2':
  gralloc: Fix division-by-0 during system emulation.
am f540c44f: am 80d3699c: gralloc: Fix division-by-0 during system emulation.

* commit 'f540c44fc218bffcdfbc226187d3cdc08e213c32':
  gralloc: Fix division-by-0 during system emulation.
Merge 80d3699c: gralloc: Fix division-by-0 during system emulation.

This patch avoids a division-by-0 when the system is running
under emulation (the kernel driver reports pixclock as 0, for
some reason). Which results in a SIGFPE during the boot sequence.

Change-Id: Ia9febdf143dcbce9837ca89c641e95dce3a888bb
am 3d05f9cf: Merge 80d3699c: gralloc: Fix division-by-0 during system emulation.

* commit '3d05f9cfbd996f52c0bd6307a80beaabc4e58140':
  Merge 80d3699c: gralloc: Fix division-by-0 during system emulation.