clk: qcom: clk-debug: Add support to dump GDSC registers

Add support to dump client's GDSC registers when client
passes a regulator(GDSC) handle to clock dump functions.
While at it, increase the GDSC regmap size to include all
GDSC registers.

And for legacy HW, that only supports single GDSCR per GDSC,
'qcom,no-config-gdscr' flag can be specified in GDSC DT node
to decrease the regmap size and map only single GDSCR.

Change-Id: Ia03c647deae9ffe9df93be60abd901bef25c3503
Signed-off-by: Jagadeesh Kona <jkona@codeaurora.org>