msm: Support DEBUG_LL on MSM Copper

Use new config MSM_HAS_DEBUG_UART_HS instead of SERIAL_MSM_HSL so
as to remove dependency on serial driver to be enabled for DEBUG_LL
functionality.

Update register mappings to support UARTDM core v1.4 in
debug-macro.S and uncompress.h and add IO mappings for
debug uart.

Change-Id: If7a95d568cc4128b229e8f20a398fa63efb34924
Signed-off-by: Sathish Ambley <sambley@codeaurora.org>