Build with 16K page sizes in mind on aarch64

By default binutils on buildroot aligns sections to 4kb boundaries, but
there are several 16k only linux distros out there now that default to
16kb pages.

With this change the elf files will have their sections aligned to 16kb
boundaries which should ensure binaries produced with the toolchain work
on most aarch64 linuxes.

arch/arch.mk

@@ -19,14 +19,15 @@ GCC_TARGET_FLOAT_ABI := $(call qstrip,$(BR2_GCC_TARGET_FLOAT_ABI))
 GCC_TARGET_MODE := $(call qstrip,$(BR2_GCC_TARGET_MODE))
 
 # Explicitly set LD's "max-page-size" instead of relying on some defaults
-ifeq ($(BR2_ARC_PAGE_SIZE_4K)$(BR2_ARM64_PAGE_SIZE_4K),y)
+ifeq ($(BR2_ARC_PAGE_SIZE_4K),y)
 ARCH_TOOLCHAIN_WRAPPER_OPTS += -Wl,-z,max-page-size=4096 -Wl,-z,common-page-size=4096
 else ifeq ($(BR2_ARC_PAGE_SIZE_8K),y)
 ARCH_TOOLCHAIN_WRAPPER_OPTS += -Wl,-z,max-page-size=8192 -Wl,-z,common-page-size=8192
 else ifeq ($(BR2_ARC_PAGE_SIZE_16K),y)
 ARCH_TOOLCHAIN_WRAPPER_OPTS += -Wl,-z,max-page-size=16384 -Wl,-z,common-page-size=16384
-else ifeq ($(BR2_ARM64_PAGE_SIZE_64K),y)
-ARCH_TOOLCHAIN_WRAPPER_OPTS += -Wl,-z,max-page-size=65536 -Wl,-z,common-page-size=65536
+else ifeq ($(BR2_aarch64),y)
+ARCH_TOOLCHAIN_WRAPPER_OPTS += -Wl,-z,max-page-size=16384 -Wl,-z,common-page-size=16384
+else
 endif
 
 # Include any architecture specific makefiles.