[10/77] Make assemble_real take a scalar_float_mode

[10/77] Make assemble_real take a scalar_float_mode

As per subject.

2017-08-30  Richard Sandiford  <richard.sandiford@linaro.org>
	    Alan Hayward  <alan.hayward@arm.com>
	    David Sherwood  <david.sherwood@arm.com>

gcc/
	* output.h (assemble_real): Take a scalar_float_mode.
	* config/arm/arm.c (arm_assemble_integer): Update accordingly.
	* config/arm/arm.md (consttable_4): Likewise.
	(consttable_8): Likewise.
	(consttable_16): Likewise.
	* config/mips/mips.md (consttable_float): Likewise.
	* config/s390/s390.c (s390_output_pool_entry): Likewise.
	* varasm.c (assemble_real): Take a scalar_float_mode.
	(output_constant_pool_2): Update accordingly.
	(output_constant): Likewise.

Co-Authored-By: Alan Hayward <alan.hayward@arm.com>
Co-Authored-By: David Sherwood <david.sherwood@arm.com>
From-SVN: r251461