tree aff014ebfdf2c101cd22109185e89cb710ecd182
parent 82cffccd642142b7dd48c9a874718e69e83b2ef3
author Vernon Mauery <vernon.mauery@linux.intel.com> 1690481329 -0700
committer Vernon Mauery <vernon.mauery@linux.intel.com> 1692833081 +0000

make isDCMIPowerMgmtSupported cache response

isDCMIPowerMgmtSupported is called a lot if any of the DCMI commands
are used, so it makes sense to cache the value rather than constantly
re-parsing the JSON file, especially since it won't change except for
on a fw update.

Tested: DCMI power management commands continue to work as before.

Change-Id: Id0deb40c4a5332d5f96d7dda6d958f20925c01a9
Signed-off-by: Vernon Mauery <vernon.mauery@linux.intel.com>