soc/intel/pantherlake: Remove mailbox interface offset

In PTL Crashlog Watcher interface is used instead of Mailbox since it
is based on the Intel Platform Monitoring Technology (PMT) standard.
The Watcher interface provides a more flexible and efficient way to
control and monitor crashlog collection. Hence the functionalities like
rearm and clear are implemented using watcher interface instead of BIOS
mailbox to PUNIT.

Change-Id: I24c5c9753a577b255a7129d20ab83f93001a0485
Signed-off-by: Sowmya Aralguppe <sowmya.aralguppe@intel.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/88500
Reviewed-by: <srinivas.kulkarni@intel.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Subrata Banik <subratabanik@google.com>
Reviewed-by: Jérémy Compostella <jeremy.compostella@intel.com>

src/soc/intel/pantherlake/include/soc/crashlog.h

@@ -15,9 +15,6 @@
 #define TEL_DVSEC_TBIR_BAR0			0
 #define TEL_DVSEC_TBIR_BAR1			1
 
-/* CPU CrashLog MMIO Registers */
-#define CRASHLOG_MAILBOX_INTF_ADDRESS		0x6038
-
 typedef union {
 	struct {
 		u32 reserved1		:27;