cache/core/l2_stopclocks updates

patchset 1: skip l2_stopclocks if ex_select is 0
patchset 2: check power state before execute hwp
patchset 3: fix syntax typos from patch 2 update
patchset 4: add chiplet accessibility check
patchset 5: add possible counter to CME PCBMUX
patchset 6: add skipping message on check
patchset 7: change polling timout method
patchset 8: add a missing comma
patchset 9: fix ffdc
patchset 10:roll back cme pcbmux counter until
            check to ensure cme accessibility
patchset 11:rebased
patchset 12:initial checkin of ppe state handling
patchset 13:checkin new clk_ctrl_state procedure
patchset 14:add attribute xml for new procedure
patchset 15:fix calling the p9_common_clk_ctrl_state
patchset 16:Matt rebase
patchset 17:Warning instead of fail with error on check
            delete common C file, include only header

Change-Id: Ic8c96366b294a9d3ebfdc07857d494ec33e30799
Original-Change-Id: I14c9480ac0931ac7f8b456f193148ceb3b939947
Reviewed-on: http://ralgit01.raleigh.ibm.com/gerrit1/28808
Dev-Ready: YUE DU <daviddu@us.ibm.com>
Tested-by: Jenkins Server <pfd-jenkins+hostboot@us.ibm.com>
Tested-by: Hostboot CI <hostboot-ci+hostboot@us.ibm.com>
Reviewed-by: Matt K. Light <mklight@us.ibm.com>
Tested-by: PPE CI <ppe-ci+hostboot@us.ibm.com>
Reviewed-by: Gregory S. Still <stillgs@us.ibm.com>
Reviewed-by: Jennifer A. Stofer <stofer@us.ibm.com>
Reviewed-on: http://ralgit01.raleigh.ibm.com/gerrit1/37041
Reviewed-by: Daniel M. Crowell <dcrowell@us.ibm.com>
Tested-by: Daniel M. Crowell <dcrowell@us.ibm.com>

src/import/chips/p9/procedures/hwp/lib/p9_hcd_common.H

@@ -43,8 +43,8 @@
 // Create a multi-bit mask of \a n bits starting at bit \a b
 #define BITS64(b, n) ((0xffffffffffffffffull << (64 - (n))) >> (b))
 #define BITS32(b, n) ((0xffffffff            << (32 - (n))) >> (b))
-#define BITS16(b, n) ((0xffff                << (16 - (n))) >> (b))
-#define BITS8(b, n)  ((0xff                  << (8  - (n))) >> (b))
+#define BITS16(b, n) (((0xffff                << (16 - (n))) & 0xffff) >> (b))
+#define BITS8(b, n)  (((0xff                  << (8  - (n))) & 0xff) >> (b))
 
 // Create a single bit mask at bit \a b
 #define BIT64(b) BITS64((b), 1)