Change in coreboot[master]: device/mmio.h: Move readXp/writeXp helpers to device/mmio.h

[Patrick Rudolph (Code Review)]

Attention is currently required from: Lance Zhao, Arthur Heymans, Tim Wawrzynczak, Julius Werner, Angel Pons, Patrick Rudolph, Jianjun Wang.
Patrick Rudolph has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/62561 )

Change subject: device/mmio.h: Move readXp/writeXp helpers to device/mmio.h
......................................................................

Patch Set 4:

(2 comments)

File src/arch/arm/include/armv4/arch/mmio.h:

https://review.coreboot.org/c/coreboot/+/62561/comment/1463b467_8095b142 
PS4, Line 27: static inline uint64_t read64(const void *addr)
this architecture doesn't support 64bit data stores

File src/arch/arm/include/armv7/arch/mmio.h:

https://review.coreboot.org/c/coreboot/+/62561/comment/51ea8e3c_d4110c7a 
PS4, Line 32: static inline uint64_t read64(const void *addr)
this architecture doesn't support 64bit data stores