skiboot/imc: Fix the core_imc_event_mask

CORE_IMC_EVENT_MASK is a scom that contains bits to control event sampling for
different machine state for core imc. The current event-mask setting sample
events only on host kernel (hypervisor) and host userspace.

Patch to enable the sampling of events in other machine states (like guest
kernel and guest userspace).

Signed-off-by: Anju T Sudhakar <anju@linux.vnet.ibm.com>
Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>

include/imc.h

@@ -125,7 +125,7 @@ struct imc_chip_cb
  * Core IMC SCOMs
  */
 #define CORE_IMC_EVENT_MASK_ADDR	0x20010AA8ull
-#define CORE_IMC_EVENT_MASK		0x0001020000000000ull
+#define CORE_IMC_EVENT_MASK		0x0402010000000000ull
 #define CORE_IMC_PDBAR_MASK		0x0003ffffffffe000ull
 #define CORE_IMC_HTM_MODE_ENABLE	0xE800000000000000ull
 #define CORE_IMC_HTM_MODE_DISABLE	0xE000000000000000ull