Create power folder and align pm_freeze_timeout settings with p22

Create a new power folder for adding common settings among projects.
The first usage would be to align pm_freeze_timeout with p22.

Bug: 331612600
Test: cat /sys/power/pm_freeze_timeout and the value is correct.
Flag: EXEMPT (bug 337358613)
Signed-off-by: liangjlee <liangjlee@google.com>
(cherry picked from https://googleplex-android-review.googlesource.com/q/commit:21f38c7d0d5496fdf85419f7f37382a510599730)
Merged-In: Ib8219114ec7d789ea3ee9a44863497d3751c0baf
Change-Id: Ib8219114ec7d789ea3ee9a44863497d3751c0baf
diff --git a/power/power.mk b/power/power.mk
new file mode 100644
index 0000000..336cd96
--- /dev/null
+++ b/power/power.mk
@@ -0,0 +1 @@
+PRODUCT_PACKAGES += init.power-gs.rc