Don't subtract chunk start from address in read_word as this is inconsistent with other consumers of memory map definitions. Fixes graphical corruption in NBA Jam TE and possibly other titles that use the Acclaim mapper with a 32Mbit ROM

void svp_prog_read_16(svp_context *context)
{
	uint16_t address = context->scratch1 >> 1;
	context->scratch1 = context->rom[address];
}