arm64: dts: msm8998: efficiency is not valid property

efficiency comes from downstream. The valid upstream property is
capacity-dmips-mhz but until we can come up with those numbers, remove
this property.
Signed-off-by: NAmit Kucheria <amit.kucheria@linaro.org>
Signed-off-by: NAndy Gross <agross@kernel.org>

arch/arm64/boot/dts/qcom/msm8998.dtsi

@@ -78,7 +78,6 @@
 			compatible = "arm,armv8";
 			reg = <0x0 0x0>;
 			enable-method = "psci";
-			efficiency = <1024>;
 			next-level-cache = <&L2_0>;
 			L2_0: l2-cache {
 				compatible = "arm,arch-cache";
@@ -97,7 +96,6 @@
 			compatible = "arm,armv8";
 			reg = <0x0 0x1>;
 			enable-method = "psci";
-			efficiency = <1024>;
 			next-level-cache = <&L2_0>;
 			L1_I_1: l1-icache {
 				compatible = "arm,arch-cache";
@@ -112,7 +110,6 @@
 			compatible = "arm,armv8";
 			reg = <0x0 0x2>;
 			enable-method = "psci";
-			efficiency = <1024>;
 			next-level-cache = <&L2_0>;
 			L1_I_2: l1-icache {
 				compatible = "arm,arch-cache";
@@ -127,7 +124,6 @@
 			compatible = "arm,armv8";
 			reg = <0x0 0x3>;
 			enable-method = "psci";
-			efficiency = <1024>;
 			next-level-cache = <&L2_0>;
 			L1_I_3: l1-icache {
 				compatible = "arm,arch-cache";
@@ -142,7 +138,6 @@
 			compatible = "arm,armv8";
 			reg = <0x0 0x100>;
 			enable-method = "psci";
-			efficiency = <1536>;
 			next-level-cache = <&L2_1>;
 			L2_1: l2-cache {
 				compatible = "arm,arch-cache";
@@ -161,7 +156,6 @@
 			compatible = "arm,armv8";
 			reg = <0x0 0x101>;
 			enable-method = "psci";
-			efficiency = <1536>;
 			next-level-cache = <&L2_1>;
 			L1_I_101: l1-icache {
 				compatible = "arm,arch-cache";
@@ -176,7 +170,6 @@
 			compatible = "arm,armv8";
 			reg = <0x0 0x102>;
 			enable-method = "psci";
-			efficiency = <1536>;
 			next-level-cache = <&L2_1>;
 			L1_I_102: l1-icache {
 				compatible = "arm,arch-cache";
@@ -191,7 +184,6 @@
 			compatible = "arm,armv8";
 			reg = <0x0 0x103>;
 			enable-method = "psci";
-			efficiency = <1536>;
 			next-level-cache = <&L2_1>;
 			L1_I_103: l1-icache {
 				compatible = "arm,arch-cache";