sys: remove comment for armv5/6

Signed-off-by: Minsoo Choo <minsoochoo0122@proton.me>
Reviewed by: imp
Pull Request: https://github.com/freebsd/freebsd-src/pull/1903

sys/arm/include/param.h

@@ -78,8 +78,6 @@
  * This does not reflect the optimal alignment, just the possibility
  * (within reasonable limits).
  *
- * armv4 and v5 require alignment to the type's size.  armv6 requires 8-byte
- * alignment for the ldrd/strd instructions, but otherwise follows armv7 rules.
  * armv7 requires that an 8-byte type be aligned to at least a 4-byte boundary;
  * access to smaller types can be unaligned, except that the compiler may
  * optimize access to adjacent uint32_t values into a single load/store-multiple

sys/arm/include/vmparam.h

@@ -73,10 +73,7 @@
 #endif
 
 /*
- * The virtual address the kernel is linked to run at.  For armv4/5 platforms
- * the low-order 30 bits of this must match the low-order bits of the physical
- * address the kernel is loaded at, so the value is most often provided as a
- * kernel config option in the std.platform file. For armv6/7 the kernel can
+ * The virtual address the kernel is linked to run at. For armv7 the kernel can
  * be loaded at any 2MB boundary, and KERNVIRTADDR can also be set to any 2MB
  * boundary.  It is typically overridden in the std.platform file only when
  * KERNBASE is also set to a lower address to provide more KVA.