arch/arm/src/tiva, include/nuttx/sensors: Reinstate TM4C qencoder driver and expand its ioctls.
arch/arm/src/tiva/Kconfig:
* Add TIVA_HAVE_QEI0, TIVA_HAVE_QEI1 as applicable to each ARCH_CHIP_TM4C12*.
* Add config TIVA_QEI, TIVA_HAVE_QEI0, TIVA_HAVE_QEI1.
* Add config TIVA_QEI0, config TIVA_QEI1.
arch/arm/src/tiva/common/tiva_qencoder.c:
* Rewrite tiva_qe_setup().
* Replace tiva_qe_ppr() with tiva_qe_resetatppr().
* Add tiva_qe_resetatmaxpos(), tiva_qe_resetatindex().
arch/arm/src/tiva/hardware/tiva_qencoder.h:
* Add missing definitions: SIGMODE_QUADRATURE, SIGMODE_CLK_AND_DIR, SWAP_NO_SWAP, SWAP_PHA_PHB.
arch/arm/src/tiva/tiva_qencoder.h:
* Rename TIVA QEI ioctl QEIOC_PPR to QEIOC_RESETATPPR.
* Add TIVA QEI ioctl identifiers QEIOC_RESETATMAXPOS, QEIOC_RESETATINDEX.
include/nuttx/sensors/qencoder.h:
* Increase QE_TIVA_NCMDS from 3 to 5.
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