ARM: dts: aspeed: everest: Add reserved memory for TPM event log

Trusted boot support requires the platform event log passed up
from the bootloader. In U-Boot, this can now be accomplished with
a reserved memory region, so add a region for this purpose to the
Everest BMC devicetree.

Signed-off-by: Eddie James <eajames@linux.ibm.com>
Link: https://lore.kernel.org/r/20230222015056.3903734-1-eajames@linux.ibm.com
Signed-off-by: Joel Stanley <joel@jms.id.au>

Author: Eddie James

arch/arm/boot/dts/aspeed-bmc-ibm-everest.dts

@@ -162,6 +162,11 @@
 		#size-cells = <1>;
 		ranges;
 
+		event_log: tcg_event_log@b3d00000 {
+			no-map;
+			reg = <0xb3d00000 0x100000>;
+		};
+
 		ramoops@b3e00000 {
 			compatible = "ramoops";
 			reg = <0xb3e00000 0x200000>; /* 16 * (4 * 0x8000) */
@@ -1887,6 +1892,7 @@
 	tpm@2e {
 		compatible = "nuvoton,npct75x", "tcg,tpm-tis-i2c";
 		reg = <0x2e>;
+		memory-region = <&event_log>;
 	};
 };