add new constants for macOS Big Sur

Author: bsteinb

src/unix/bsd/apple/mod.rs

@@ -2846,7 +2846,9 @@ pub const HW_L3CACHESIZE: ::c_int = 22;
 pub const HW_TB_FREQ: ::c_int = 23;
 pub const HW_MEMSIZE: ::c_int = 24;
 pub const HW_AVAILCPU: ::c_int = 25;
-pub const HW_MAXID: ::c_int = 26;
+pub const HW_TARGET: ::c_int = 26;
+pub const HW_PRODUCT: ::c_int = 27;
+pub const HW_MAXID: ::c_int = 28;
 pub const USER_CS_PATH: ::c_int = 1;
 pub const USER_BC_BASE_MAX: ::c_int = 2;
 pub const USER_BC_DIM_MAX: ::c_int = 3;