PCI/pwrctrl: tc9563: Rename private struct and pointers for consistency

PCI/pwrctrl: tc9563: Rename private struct and pointers for consistency

Previously the pwrseq, tc9563, and slot pwrctrl drivers used different
naming conventions for their private data structs and pointers to them,
which makes patches hard to read.

Rename struct and variables to be shorter and more specific:

  struct tc9563_pwrctrl_ctx      -> struct tc9563_pwrctrl
  struct tc9563_pwrctrl_ctx *ctx -> struct tc9563_pwrctrl *tc9563

No functional change intended.

Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@oss.qualcomm.com>
Reviewed-by: Bartosz Golaszewski <bartosz.golaszewski@oss.qualcomm.com>
Link: https://patch.msgid.link/20260115-pci-pwrctrl-rework-v5-6-9d26da3ce903@oss.qualcomm.com