disp: msm: avoid minidump region addition for mdss register dumps

This change enables minidump for register dumps, debug bus collection
based on CONFIG_QCOM_VA_MINIDUMP config. The minidump driver in 5.4 kernel
needs physical contiguous memory allocation as a requirement. The
minidump collection failure is seen with commit fdf36d71
("disp: msm: use vzalloc for large allocations") and it uses
vzalloc to address memory allocation failure with order 5. This
patch will disable minidump collection for regdumps, debug bus
to address minidump collection failure.

Change-Id: If5ff91ff95279ee2997765599dbeab16ac2dae60
Signed-off-by: Jayaprakash Madisetty <quic_jmadiset@quicinc.com>