ld/testsuite: Adjust for ELF_MAXPAGESIZE 0x1000

Many tests reflect a setting of ELF_MAXPAGESIZE to 64 KiB.
With ELF_MAXPAGESIZE changed to 4 KiB, layout is sometimes
different and symbols end up in other places.  Avoid churn
and regexpification of old test patterns by passing the
max-page-size setting active at the time.

ld/testsuite:

	* testsuite/ld-arm/arm-elf.exp,
        testsuite/ld-arm/non-contiguous-arm2.d,
        testsuite/ld-arm/non-contiguous-arm3.d,
        testsuite/ld-arm/non-contiguous-arm5.d,
        testsuite/ld-arm/non-contiguous-arm6.d,
        testsuite/ld-arm/thumb-plt-got.d, testsuite/ld-arm/thumb-plt.d:
	Pass -z max-page-size=0x10000 explicitly to test that rely on
	that value in output-matching patterns.